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1 :	dbm	570	This is the HISTORY file for the Yale SML/NJ CVS repository.
2 :
3 :			An entry should be made for _every_ commit to the repository.
4 :			The entries in this file will be used when creating the README
5 :			for new versions, so keep that in mind when writing the
6 :			description.
7 :
8 :			The form of an entry should be:
9 :
10 :			Name:
11 :	george	1003	Date: yyyy/mm/dd
12 :	dbm	570	Tag: <post-commit CVS tag>
13 :			Description:
14 :	leunga	1025
15 :	george	1003	----------------------------------------------------------------------
16 :	blume	1132	Name: Matthias Blume
17 :			Date: 2002/03/11 13:30:00 EST
18 :			Tag: blume-20020311-mltreeeval
19 :			Description:
20 :
21 :			A functor parameter was missing.
22 :
23 :			----------------------------------------------------------------------
24 :	leunga	1130	Name: Allen Leung
25 :	leunga	1131	Date: 2002/03/11 10:30:00 EST
26 :			Tag: leunga-20020310-runtime-string0
27 :			Description:
28 :
29 :			The representation of the empty string now points to a
30 :			legal null terminated C string instead of unit. It is now possible
31 :			to convert an ML string into C string with InlineT.CharVector.getData.
32 :			This compiles into one single machine instruction.
33 :
34 :			----------------------------------------------------------------------
35 :			Name: Allen Leung
36 :	leunga	1130	Date: 2002/03/10 23:55:00 EST
37 :			Tag: leunga-20020310-x86-call
38 :			Description:
39 :
40 :			Added machine generation for CALL instruction (relative displacement mode)
41 :
42 :			----------------------------------------------------------------------
43 :	blume	1128	Name: Matthias Blume
44 :			Date: 2002/03/08 16:05:00
45 :			Tag: blume-20020308-entrypoints
46 :			Description:
47 :
48 :			Version number bumped to 110.39.1. NEW BOOTFILES!
49 :
50 :			Entrypoints: non-zero offset into a code object where execution should begin.
51 :
52 :			- Added the notion of an entrypoint to CodeObj.
53 :			- Added reading/writing of entrypoint info to Binfile.
54 :			- Made runtime system bootloader aware of entrypoints.
55 :			- Use the address of the label of the first function given to mlriscGen
56 :			as the entrypoint. This address is currently always 0, but it will
57 :			not be 0 once we turn on block placement.
58 :			- Removed the linkage cluster code (which was The Other Way(tm) of dealing
59 :			with entry points) from mlriscGen.
60 :
61 :			----------------------------------------------------------------------
62 :	leunga	1127	Name: Allen Leung
63 :			Date: 2002/03/07 20:45:00 EST
64 :			Tag: leunga-20020307-x86-cmov
65 :			Description:
66 :
67 :			Bug fixes for CMOVcc on x86.
68 :
69 :			1. Added machine code generation for CMOVcc
70 :			2. CMOVcc is now generated in preference over SETcc on PentiumPro or above.
71 :			3. CMOVcc cannot have an immediate operand as argument.
72 :
73 :			----------------------------------------------------------------------
74 :	blume	1126	Name: Matthias Blume
75 :			Date: 2002/03/07 16:15:00 EST
76 :			Tag: blume-20020307-controls
77 :			Description:
78 :
79 :			This is a very large but mostly boring patch which makes (almost)
80 :			every tuneable compiler knob (i.e., pretty much everything under
81 :			Control.* plus a few other things) configurable via both the command
82 :			line and environment variables in the style CM did its configuration
83 :			until now.
84 :
85 :			Try starting sml with '-h' (or, if you are brave, '-H')
86 :
87 :			To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which
88 :			implements the underlying generic mechanism.
89 :
90 :			The interface to some of the existing such facilities has changed somewhat.
91 :			For example, the MLRiscControl module now provides mkFoo instead of getFoo.
92 :			(The getFoo interface is still there for backward-compatibility, but its
93 :			use is deprecated.)
94 :
95 :			The ml-build script passes -Cxxx=yyy command-line arguments through so
96 :			that one can now twiddle the compiler settings when using this "batch"
97 :			compiler.
98 :
99 :			TODO items:
100 :
101 :			We should go through and throw out all controls that are no longer
102 :			connected to anything. Moreover, we should go through and provide
103 :			meaningful (and correct!) documentation strings for those controls
104 :			that still are connected.
105 :
106 :			Currently, multiple calls to Controls.new are accepted (only the first
107 :			has any effect). Eventually we should make sure that every control
108 :			is being made (via Controls.new) exactly once. Future access can then
109 :			be done using Controls.acc.
110 :
111 :			Finally, it would probably be a good idea to use the getter-setter
112 :			interface to controls rather than ref cells. For the time being, both
113 :			styles are provided by the Controls module, but getter-setter pairs are
114 :			better if thread-safety is of any concern because they can be wrapped.
115 :
116 :			*****************************************
117 :
118 :			One bug fix: The function blockPlacement in three of the MLRISC
119 :			backpatch files used to be hard-wired to one of two possibilities at
120 :			link time (according to the value of the placementFlag). But (I
121 :			think) it should rather sense the flag every time.
122 :
123 :			*****************************************
124 :
125 :			Other assorted changes (by other people who did not supply a HISTORY entry):
126 :
127 :			1. the cross-module inliner now works much better (Monnier)
128 :			2. representation of weights, frequencies, and probabilities in MLRISC
129 :			changed in preparation of using those for weighted block placement
130 :			(Reppy, George)
131 :
132 :			----------------------------------------------------------------------
133 :	george	1116	Name: Lal George
134 :	george	1124	Date: 2002/03/07 14:44:24 EST 2002
135 :			Tag: george-20020307-weighted-block-placement
136 :
137 :			Tested the weighted block placement optimization on all architectures
138 :			(except the hppa) using AMPL to generate the block and edge frequencies.
139 :			Changes were required in the machine properties to correctly
140 :			categorize trap instructions. There is an MLRISC flag
141 :			"weighted-block-placement" that can be used to enable weighted block
142 :			placement, but this will be ineffective without block/edge
143 :			frequencies (coming soon).
144 :
145 :
146 :			----------------------------------------------------------------------
147 :			Name: Lal George
148 :	george	1116	Date: 2002/03/05 17:24:48 EST
149 :			Tag: george-20020305-linkage-cluster
150 :
151 :	george	1124	In order to support the block placement optimization, a new cluster
152 :			is generated as the very first cluster (called the linkage cluster).
153 :			It contains a single jump to the 'real' entry point for the compilation
154 :			unit. Block placement has no effect on the linkage cluster itself, but
155 :			all the other clusters have full freedom in the manner in which they
156 :			reorder blocks or functions.
157 :	george	1116
158 :			On the x86 the typical linkage code that is generated is:
159 :			----------------------
160 :			.align 2
161 :			L0:
162 :			addl $L1-L0, 72(%esp)
163 :	george	1124	jmp L1
164 :	george	1116
165 :
166 :			.align 2
167 :			L1:
168 :			----------------------
169 :
170 :			72(%esp) is the memory location for the stdlink register. This
171 :			must contain the address of the CPS function being called. In the
172 :	george	1124	above example, it contains the address of L0; before
173 :	george	1116	calling L1 (the real entry point for the compilation unit), it
174 :			must contain the address for L1, and hence
175 :
176 :			addl $L1-L0, 72(%esp)
177 :
178 :	george	1124	I have tested this on all architectures except the hppa.The increase
179 :			in code size is of course negligible
180 :	george	1116
181 :			----------------------------------------------------------------------
182 :	leunga	1115	Name: Allen Leung
183 :			Date: 2002/03/03 13:20:00 EST
184 :			Tag: leunga-20020303-mlrisc-tools
185 :
186 :			Added #[ ... ] expressions to mlrisc tools
187 :
188 :			----------------------------------------------------------------------
189 :	blume	1096	Name: Matthias Blume
190 :	blume	1098	Date: 2002/02/27 12:29:00 EST
191 :			Tag: blume-20020227-cdebug
192 :			Description:
193 :
194 :			- made types in structure C and C_Debug to be equal
195 :			- got rid of code duplication (c-int.sml vs. c-int-debug.sml)
196 :			- there no longer is a C_Int_Debug (C_Debug is directly derived from C)
197 :
198 :			----------------------------------------------------------------------
199 :			Name: Matthias Blume
200 :	blume	1096	Date: 2002/02/26 12:00:00 EST
201 :			Tag: blume-20020226-ffi
202 :			Description:
203 :
204 :			1. Fixed a minor bug in CM's "noweb" tool:
205 :			If numbering is turned off, then truly don't number (i.e., do not
206 :			supply the -L option to noweb). The previous behavior was to supply
207 :			-L'' -- which caused noweb to use the "default" line numbering scheme.
208 :			Thanks to Chris Richards for pointing this out (and supplying the fix).
209 :
210 :			2. Once again, I reworked some aspects of the FFI:
211 :
212 :			A. The incomplete/complete type business:
213 :
214 :			- Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are
215 :			gone!
216 :			- ML types representing an incomplete type are now *equal* to
217 :			ML types representing their corresponding complete types (just like
218 :			in C). This is still safe because ml-nlffigen will not generate
219 :			RTTI for incomplete types, nor will it generate functions that
220 :			require access to such RTTI. But when ML code generated from both
221 :			incomplete and complete versions of the C type meet, the ML types
222 :			are trivially interoperable.
223 :
224 :			NOTE: These changes restore the full generality of the translation
225 :			(which was previously lost when I eliminated functorization)!
226 :
227 :			B. Enum types:
228 :
229 :			- Structure C now has a type constructor "enum" that is similar to
230 :			how the "su" constructor works. However, "enum" is not a phantom
231 :			type because each "T enum" has values (and is isomorphic to
232 :			MLRep.Signed.int).
233 :			- There are generic access operations for enum objects (using
234 :			MLRep.Signed.int).
235 :			- ml-nlffigen will generate a structure E_foo for each "enum foo".
236 :			* The structure contains the definition of type "mlrep" (the ML-side
237 :			representation type of the enum). Normally, mlrep is the same
238 :			as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec",
239 :			then mlrep will be defined as a datatype -- thus facilitating
240 :			pattern matching on mlrep values.
241 :			("-ec" will be suppressed if there are duplicate values in an
242 :			enumeration.)
243 :			* Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep
244 :			will be generated for each C enum constant xxx.
245 :			* Conversion functions m2i and i2m convert between mlrep and
246 :			MLRep.Signed.int. (Without "-ec", these functions are identities.)
247 :			* Coversion functions c and ml convert between mlrep and "tag enum".
248 :			* Access functions (get/set) fetch and store mlrep values.
249 :			- By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed
250 :			enumerations are merged into one single enumeration represented by
251 :			structure E_'.
252 :
253 :			----------------------------------------------------------------------
254 :	leunga	1080	Name: Allen Leung
255 :	leunga	1094	Date: 2002/02/25 04:45:00 EST
256 :			Tag: leunga-20020225-cps-spill
257 :
258 :			This is a new implementation of the CPS spill phase.
259 :			The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml
260 :			In case of problems, replace it with the old file spill.sml
261 :
262 :			The current compiler runs into some serious performance problems when
263 :			constructing a large record. This can happen when we try to compile a
264 :			structure with many items. Even a very simple structure like the following
265 :			makes the compiler slow down.
266 :
267 :			structure Foo = struct
268 :			val x_1 = 0w1 : Word32.int
269 :			val x_2 = 0w2 : Word32.int
270 :			val x_3 = 0w3 : Word32.int
271 :			...
272 :			val x_N = 0wN : Word32.int
273 :			end
274 :
275 :			The following table shows the compile time, from N=1000 to N=4000,
276 :			with the old compiler:
277 :
278 :			N
279 :			1000 CPS 100 spill 0.04u 0.00s 0.00g
280 :			MLRISC ra 0.06u 0.00s 0.05g
281 :			(spills = 0 reloads = 0)
282 :			TOTAL 0.63u 0.07s 0.21g
283 :
284 :			1100 CPS 100 spill 8.25u 0.32s 0.64g
285 :			MLRISC ra 5.68u 0.59s 3.93g
286 :			(spills = 0 reloads = 0)
287 :			TOTAL 14.71u 0.99s 4.81g
288 :
289 :			1500 CPS 100 spill 58.55u 2.34s 1.74g
290 :			MLRISC ra 5.54u 0.65s 3.91g
291 :			(spills = 543 reloads = 1082)
292 :			TOTAL 65.40u 3.13s 6.00g
293 :
294 :			2000 CPS 100 spill 126.69u 4.84s 3.08g
295 :			MLRISC ra 0.80u 0.10s 0.55g
296 :			(spills = 42 reloads = 84)
297 :			TOTAL 129.42u 5.10s 4.13g
298 :
299 :			3000 CPS 100 spill 675.59u 19.03s 11.64g
300 :			MLRISC ra 2.69u 0.27s 1.38g
301 :			(spills = 62 reloads = 124)
302 :			TOTAL 682.48u 19.61s 13.99g
303 :
304 :			4000 CPS 100 spill 2362.82u 56.28s 43.60g
305 :			MLRISC ra 4.96u 0.27s 2.72g
306 :			(spills = 85 reloads = 170)
307 :			TOTAL 2375.26u 57.21s 48.00g
308 :
309 :			As you can see the old cps spill module suffers from some serious
310 :	leunga	1115	performance problem. But since I cannot decipher the old code fully,
311 :			instead of patching the problems up, I'm reimplementing it
312 :	leunga	1094	with a different algorithm. The new code is more modular,
313 :			smaller when compiled, and substantially faster
314 :			(O(n log n) time and O(n) space). Timing of the new spill module:
315 :
316 :			4000 CPS 100 spill 0.02u 0.00s 0.00g
317 :			MLRISC ra 0.25u 0.02s 0.15g
318 :			(spills=1 reloads=3)
319 :			TOTAL 7.74u 0.34s 1.62g
320 :
321 :			Implementation details:
322 :
323 :			As far as I can tell, the purpose of the CPS spill module is to make sure the
324 :			number of live variables at any program point (the bandwidth)
325 :			does not exceed a certain limit, which is determined by the
326 :			size of the spill area.
327 :
328 :			When the bandwidth is too large, we decrease the register pressure by
329 :			packing live variables into spill records. How we achieve this is
330 :			completely different than what we did in the old code.
331 :
332 :			First, there is something about the MLRiscGen code generator
333 :			that we should be aware of:
334 :
335 :			o MLRiscGen performs code motion!
336 :
337 :			In particular, it will move floating point computations and
338 :			address computations involving only the heap pointer to
339 :			their use sites (if there is only a single use).
340 :			What this means is that if we have a CPS record construction
341 :			statement
342 :
343 :			RECORD(k,vl,w,e)
344 :
345 :			we should never count the new record address w as live if w
346 :			has only one use (which is often the case).
347 :
348 :			We should do something similar to floating point, but the transformation
349 :			there is much more complex, so I won't deal with that.
350 :
351 :			Secondly, there are now two new cps primops at our disposal:
352 :
353 :			1. rawrecord of record_kind option
354 :			This pure operator allocates some uninitialized storage from the heap.
355 :			There are two forms:
356 :
357 :			rawrecord NONE [INT n] allocates a tagless record of length n
358 :			rawrecord (SOME rk) [INT n] allocates a tagged record of length n
359 :			and initializes the tag.
360 :
361 :			2. rawupdate of cty
362 :			rawupdate cty (v,i,x)
363 :			Assigns to x to the ith component of record v.
364 :			The storelist is not updated.
365 :
366 :			We use these new primops for both spilling and increment record construction.
367 :
368 :			1. Spilling.
369 :
370 :			This is implemented with a linear scan algorithm (but generalized
371 :			to trees). The algorithm will create a single spill record at the
372 :			beginning of the cps function and use rawupdate to spill to it,
373 :			and SELECT or SELp to reload from it. So both spills and reloads
374 :			are fine-grain operations. In contrast, in the old algorithm
375 :			"spills" have to be bundled together in records.
376 :
377 :			Ideally, we should sink the spill record construction to where
378 :			it is needed. We can even split the spill record into multiple ones
379 :			at the places where they are needed. But CPS is not a good
380 :			representation for global code motion, so I'll keep it simple and
381 :			am not attempting this.
382 :
383 :			2. Incremental record construction (aka record splitting).
384 :
385 :			Long records with many component values which are simulatenously live
386 :			(recall that single use record addresses are not considered to
387 :			be live) are constructed with rawrecord and rawupdate.
388 :			We allocate space on the heap with rawrecord first, then gradually
389 :			fill it in with rawupdate. This is the technique suggested to me
390 :			by Matthias.
391 :
392 :			Some restrictions on when this is applicable:
393 :			1. It is not a VECTOR record. The code generator currently does not handle
394 :			this case. VECTOR record uses double indirection like arrays.
395 :			2. All the record component values are defined in the same "basic block"
396 :			as the record constructor. This is to prevent speculative
397 :			record construction.
398 :
399 :			----------------------------------------------------------------------
400 :			Name: Allen Leung
401 :	leunga	1086	Date: 2002/02/22 01:02:00 EST
402 :			Tag: leunga-20020222-mlrisc-tools
403 :
404 :			Minor bug fixes in the parser and rewriter
405 :
406 :			----------------------------------------------------------------------
407 :			Name: Allen Leung
408 :	leunga	1085	Date: 2002/02/21 20:20:00 EST
409 :			Tag: leunga-20020221-peephole
410 :
411 :			Regenerated the peephole files. Some contained typos in the specification
412 :			and some didn't compile because of pretty printing bugs in the old version
413 :			of 'nowhere'.
414 :
415 :			----------------------------------------------------------------------
416 :			Name: Allen Leung
417 :	leunga	1079	Date: 2002/02/19 20:20:00 EST
418 :			Tag: leunga-20020219-mlrisc-tools
419 :			Description:
420 :
421 :			Minor bug fixes to the mlrisc-tools library:
422 :
423 :			1. Fixed up parsing colon suffixed keywords
424 :			2. Added the ability to shut the error messages up
425 :			3. Reimplemented the pretty printer and fixed up/improved
426 :			the pretty printing of handle and -> types.
427 :			4. Fixed up generation of literal symbols in the nowhere tool.
428 :			5. Added some SML keywords to to sml.sty
429 :
430 :			----------------------------------------------------------------------
431 :			Name: Matthias Blume
432 :	blume	1078	Date: 2002/02/19 16:20:00 EST
433 :			Tag: blume-20020219-cmffi
434 :			Description:
435 :
436 :			A wild mix of changes, some minor, some major:
437 :
438 :			* All C FFI-related libraries are now anchored under $c:
439 :			$/c.cm --> $c/c.cm
440 :			$/c-int.cm --> $c/internals/c-int.cm
441 :			$/memory.cm --> $c/memory/memory.cm
442 :
443 :			* "make" tool (in CM) now treats its argument pathname slightly
444 :			differently:
445 :			1. If the native expansion is an absolute name, then before invoking
446 :			the "make" command on it, CM will apply OS.Path.mkRelative
447 :			(with relativeTo = OS.FileSys.getDir()) to it.
448 :			2. The argument will be passed through to subsequent phases of CM
449 :			processing without "going native". In particular, if the argument
450 :			was an anchored path, then "make" will not lose track of that anchor.
451 :
452 :			* Compiler backends now "know" their respective C calling conventions
453 :			instead of having to be told about it by ml-nlffigen. This relieves
454 :			ml-nlffigen from one of its burdens.
455 :
456 :			* The X86Backend has been split into X86CCallBackend and X86StdCallBackend.
457 :
458 :			* Export C_DEBUG and C_Debug from $c/c.cm.
459 :
460 :			* C type encoding in ml-nlffi-lib has been improved to model the conceptual
461 :			subtyping relationship between incomplete pointers and their complete
462 :			counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr --
463 :			with the convention of instantiating 'o with ('t, 'c) obj whenever
464 :			the pointer target type is complete. In the incomplete case, 'o
465 :			will be instantiated with some "'c iobj" -- a type obtained by
466 :			using one of the functors PointerToIncompleteType or PointerToCompleteType.
467 :
468 :			Operations that work on both incomplete and complete pointer types are
469 :			typed as taking an 'o ptr while operations that require the target to
470 :			be known are typed as taking some ('t, 'c) obj ptr.
471 :
472 :			voidptr is now a bit "more concrete", namely "type voidptr = void ptr'"
473 :			where void is an eqtype without any values. This makes it possible
474 :			to work on voidptr values using functions meant to operate on light
475 :			incomplete pointers.
476 :
477 :			* As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has
478 :			been vastly simplified.
479 :
480 :			----------------------------------------------------------------------
481 :			Name: Matthias Blume
482 :	blume	1076	Date: 2002/02/19 10:48:00 EST
483 :			Tag: blume-20020219-pqfix
484 :			Description:
485 :
486 :			Applied Chris Okasaki's bug fix for priority queues.
487 :
488 :			----------------------------------------------------------------------
489 :			Name: Matthias Blume
490 :	blume	1073	Date: 2002/02/15 17:05:00
491 :	blume	1069	Tag: Release_110_39
492 :			Description:
493 :
494 :	blume	1073	Last-minute retagging is becoming a tradition... :-(
495 :
496 :			This is the working release 110.39.
497 :
498 :			----------------------------------------------------------------------
499 :			Name: Matthias Blume
500 :			Date: 2002/02/15 16:00:00 EST
501 :			Tag: Release_110_39-orig
502 :			Description:
503 :
504 :	blume	1069	Working release 110.39. New bootfiles.
505 :
506 :	blume	1073	(Update: There was a small bug in the installer so it wouldn't work
507 :			with all shells. So I retagged. -Matthias)
508 :
509 :	blume	1069	----------------------------------------------------------------------
510 :			Name: Matthias Blume
511 :	blume	1068	Date: 2002/02/15 14:17:00 EST
512 :			Tag: blume-20020215-showbindings
513 :			Description:
514 :
515 :			Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially
516 :			the latter can be useful for exploring what bindings are available at
517 :			the interactive prompt. (The first function returns only the list
518 :			of symbols that are really bound, the second prints those but also the
519 :			ones that CM's autoloading mechanism knows about.)
520 :
521 :			----------------------------------------------------------------------
522 :			Name: Matthias Blume
523 :	blume	1067	Date: 2002/02/15 12:08:00 EST
524 :			Tag: blume-20020215-iptrs
525 :			Description:
526 :
527 :			Two improvements to ml-nlffigen:
528 :
529 :			1. Write files only if they do not exist or if their current contents
530 :			do not coincide with what's being written. (That is, avoid messing
531 :			with the time stamps unless absolutely necessary.)
532 :
533 :			2. Implement a "repository" mechanism for generated files related
534 :			to "incomplete pointer types". See the README file for details.
535 :
536 :			----------------------------------------------------------------------
537 :			Name: Matthias Blume
538 :	blume	1066	Date: 2002/02/14 11:50:00 EST
539 :			Tag: blume-20020214-quote
540 :			Description:
541 :
542 :			Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required
543 :			because of the new and improved tag generation scheme. (Thanks to Allen
544 :			Leung for pointing it out.)
545 :
546 :			----------------------------------------------------------------------
547 :	george	1065	Name: Lal George
548 :			Date: 2002/02/14 09:55:27 EST 2002
549 :			Tag: george-20020214-isabelle-bug
550 :			Description:
551 :
552 :			Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
553 :			of Isabelle on the x86.
554 :
555 :			From Allen:
556 :			-----------
557 :			I've found the problem:
558 :
559 :			in ra-core.sml, I use the counter "blocked" to keep track of the
560 :			true number of elements in the freeze queue. When the counter goes
561 :			to zero, I skip examining the queue. But I've messed up the
562 :			bookkeeping in combine():
563 :
564 :			else ();
565 :			case !ucol of
566 :			PSEUDO => (if !cntv > 0 then
567 :			(if !cntu > 0 then blocked := !blocked - 1 else ();
568 :			^^^^^^^^^^^^^^^^^^^^^^^
569 :			moveu := mergeMoveList(!movev, !moveu)
570 :			)
571 :			else ();
572 :
573 :			combine() is called to coalesce two nodes u and v.
574 :			I think I was thinking that if the move counts of u and v are both
575 :			greater than zero then after they are coalesced then one node is
576 :			removed from the freeze queue. Apparently I was thinking that
577 :			both u and v are of low degree, but that's clearly not necessarily true.
578 :
579 :
580 :			02/12/2002:
581 :			Here's the patch. HOL now compiles.
582 :
583 :			I don't know how this impact on performance (compile
584 :			time or runtime). This bug caused the RA (especially on the x86)
585 :			to go thru the potential spill phase when there are still nodes on the
586 :			freeze queue.
587 :
588 :
589 :
590 :
591 :			----------------------------------------------------------------------
592 :	blume	1058	Name: Matthias Blume
593 :	blume	1064	Date: 2002/02/13 22:40:00 EST
594 :			Tag: blume-20020213-fptr-rtti
595 :			Description:
596 :
597 :			Fixed a bug in ml-nlffigen that was introduced with one of the previous
598 :			updates.
599 :
600 :			----------------------------------------------------------------------
601 :			Name: Matthias Blume
602 :	blume	1063	Date: 2002/02/13 16:41:00 EST
603 :			Tag: blume-20020213-cmlpq
604 :			Description:
605 :
606 :			Added new priority queue export symbols (which have just been added to
607 :			smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would
608 :			not compile and the installer would choke.)
609 :
610 :			----------------------------------------------------------------------
611 :			Name: Matthias Blume
612 :	blume	1062	Date: 2002/02/13 16:15:00 EST
613 :			Tag: blume-20020213-various
614 :			Description:
615 :
616 :			1. More tweaks to ml-nlffigen:
617 :
618 :			- better internal datastructures (resulting in slight speedup)
619 :			- "-match" option requires exact match
620 :			- "localized" gensym counters (untagged structs/unions nested within
621 :			other structs/unions or within typedefs get a fresh counter; their
622 :			tag will be prefixed by a concatenation of their parents' tags)
623 :			- bug fixes (related to calculation of transitive closure of types
624 :			to be included in the output)
625 :
626 :			2. Minor Basis updates:
627 :
628 :			- added implementations for List.collate and Option.app
629 :
630 :			----------------------------------------------------------------------
631 :			Name: Matthias Blume
632 :	blume	1060	Date: 2002/02/11 15:55:00 EST
633 :			Tag: blume-20020211-gensym
634 :			Description:
635 :
636 :			Added a "-gensym" option to command line of ml-nlffigen. This can be
637 :			used to specify a "stem" -- a string that is inserted in all "gensym'd"
638 :			names (ML structure names that correspond to unnamed C structs, unions,
639 :			and enums), so that separate runs of ml-nlffigen do not clash.
640 :
641 :			----------------------------------------------------------------------
642 :			Name: Matthias Blume
643 :	blume	1059	Date: 2002/02/11 12:05:00 EST
644 :			Tag: blume-20020211-gensml
645 :			Description:
646 :
647 :			A quick fix for a problem with GenSML (in the pgraph-util library):
648 :			Make generation of toplevel "local" optional. (Strictly speaking,
649 :			signature definitions within "local" are not legal SML.)
650 :
651 :			Other than that: updates to INSTALL and cm/TODO.
652 :
653 :			----------------------------------------------------------------------
654 :			Name: Matthias Blume
655 :	blume	1058	Date: 2002/02/08 15:00:00 EST
656 :			Tag: blume-20020208-uniquepid
657 :			Description:
658 :
659 :			0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!!
660 :
661 :			1. The installer (config/install.sh) has gotten smarter:
662 :
663 :			- Configuration options are a bit easier to specify now
664 :			(in config/targets).
665 :			- Bug in recognizing .tar.bz2 files fixed.
666 :			- Installer automatically resolves dependencies between
667 :			configuration options (e.g., if you ask for eXene, you will
668 :			also get cml -- regardless whether you asked for it or not).
669 :			- Installer can run in "quieter mode" by setting the environment
670 :			variable INSTALL_QUIETLY to "true". "Quieter" does not mean
671 :			"completely silent", though.
672 :			- Build HashCons library as part of smlnj-lib.
673 :
674 :			2. A new scheme for assigning persistent identifiers to compilation
675 :			units (and, by extension, to types etc.) has been put into place.
676 :			This fixes a long-standing bug where types and even dynamic values
677 :			can get internally confused, thereby compromising type safety
678 :			(abstraction) and dynamic correctness. See
679 :
680 :			http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
681 :
682 :			for an example of how things could go wrong until now.
683 :
684 :			The downside of the new scheme is that pids are not quite as
685 :			persistent as they used to be: CM will generate a fresh pid
686 :			for every compilation unit that it thinks it sees for the first
687 :			time. That means that if you compile starting from a clean, fresh
688 :			source tree at two different times, you end up with different
689 :			binaries.
690 :
691 :			Cutoff recompilation, however, has not been compromised because
692 :			CM keeps pid information in special caches between runs.
693 :
694 :			----------------------------------------------------------------------
695 :	george	1053	Name: Lal George
696 :	george	1055	Date: 2002/02/07 15:34:13 EST 2002
697 :			Tag: <none>
698 :			Description:
699 :
700 :			Compilers that generate assembly code may produce global labels
701 :			whose value is resolved at link time. The various peephole optimization
702 :			modules did not take this in account.
703 :
704 :			TODO. The Labels.addrOf function should really return an option
705 :			type so that clients are forced to deal with this issue, rather
706 :			than an exception being raised.
707 :
708 :			----------------------------------------------------------------------
709 :			Name: Lal George
710 :	george	1053	Date: 2002/02/06 13:55:02 EST
711 :			Tag: george-20020206-ra-breakup
712 :			Description:
713 :
714 :			1. A bug fix from Allen.
715 :
716 :			A typo causes extra fstp %st(0)'s to be generated at compensation
717 :			edges, which might cause stack underflow traps at runtime. This
718 :			occurs in fft where there are extraneous fstps right before the 'into'
719 :			trap instruction (in this case they are harmless since none of the
720 :			integers overflow.)
721 :
722 :	george	1054	2. Pulled out various utility modules that were embedded in the modules
723 :	george	1053	of the register allocator. I need these modules for other purposes, but
724 :	george	1054	they are not complete enough to put into a library (just yet).
725 :	george	1053	----------------------------------------------------------------------
726 :	blume	1049	Name: Matthias Blume
727 :			Date: 2002/01/31 16:05:00 EST
728 :			Tag: blume-20020131-sparc-ccalls
729 :			Description:
730 :
731 :			1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
732 :			of extra stack space by mistake. Fixed.
733 :
734 :			2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
735 :
736 :			----------------------------------------------------------------------
737 :	leunga	1048	Name: Allen Leung
738 :			Date: 2002/01/30
739 :			Tag: leunga-20020130-nowhere-bug-fix
740 :			Description:
741 :
742 :			MLRISC bug fixes:
743 :			1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
744 :			2. MachineInt.fromString was negating its value.
745 :
746 :			----------------------------------------------------------------------
747 :	blume	1039	Name: Matthias Blume
748 :	blume	1047	Date: 2002/01/29
749 :			Tag: blume-20020129-INSTALL
750 :			Description:
751 :
752 :			- Added somewhat detailed installation instructions (file INSTALL).
753 :			- Fixed curl-detection bug in config/install.sh.
754 :			- It is now possible to select the URL getter using the URLGETTER
755 :			environment variable:
756 :
757 :			not set / "unknown" --> automatic detection (script tries wget,
758 :			curl, and lynx)
759 :			"wget" / "curl" / "lynx" --> use the specified program (script "knows"
760 :			how to properly invoke them)
761 :			other --> use $URLGETTER directly, it must take
762 :			precisely two command-line arguments
763 :			(source URL and destination file name)
764 :
765 :			----------------------------------------------------------------------
766 :			Name: Matthias Blume
767 :	blume	1044	Date: 2002/01/28
768 :	blume	1045	Tag: blume-20020128-sparc-ccalls
769 :			Description:
770 :
771 :			- Fixed problem with calculation of "used" registers in sparc-c-calls.
772 :			- Make use of the allocParam argument in sparc-c-calls.
773 :
774 :			----------------------------------------------------------------------
775 :			Name: Matthias Blume
776 :			Date: 2002/01/28
777 :	blume	1044	Tag: blume-20020128-allocParam
778 :			Description:
779 :
780 :			John Reppy: Changes c-calls API to accept client-callback for
781 :			allocating extra stack space.
782 :			me: Corresponding changes to mlriscGen (using a dummy argument that
783 :			does not change the current behavior).
784 :
785 :			----------------------------------------------------------------------
786 :			Name: Matthias Blume
787 :	blume	1040	Date: 2002/01/28 12:00:00
788 :			Tag: Release_110_38
789 :			Description:
790 :
791 :			This time for real!!!
792 :
793 :			----------------------------------------------------------------------
794 :			Name: Matthias Blume
795 :	blume	1039	Date: 2002/01/28 10:56:00 EST
796 :			Tag: blume-20020128-retraction
797 :			Description:
798 :
799 :			0. Retracted earlier 110.38. (The Release_110_38 tag has been replaced
800 :			with blume-Release_110_38-retracted.)
801 :
802 :			1. Fixed a problem with incorrect rounding modes in real64.sml.
803 :			(Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
804 :
805 :			2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
806 :			and enums fixed. The naming of corresponding ML identifiers should
807 :			now be consistent again.
808 :
809 :			----------------------------------------------------------------------
810 :	leunga	1038	Name: Allen Leung
811 :			Date: 2002/01/27
812 :			Tag: leunga-20020127-nowhere
813 :			Description:
814 :
815 :			Added a target called nowhere in the configuration scripts.
816 :			Enabling this will build the MLRISC 'nowhere' tool (for translating
817 :			programs with where-clauses into legal SML code) during installation.
818 :
819 :			----------------------------------------------------------------------
820 :	blume	1036	Name: Matthias Blume
821 :	leunga	1038	Date: 2002/01/25 21:27:00 EST
822 :	blume	1039	Tag: blume-Release_110_38-retracted
823 :	blume	1037	Description:
824 :
825 :			Call it a (working) release! Version is 110.38. Bootfiles are ready.
826 :
827 :			README will be added later.
828 :
829 :	blume	1039	!!! NOTE: Re-tagged as blume-Release_110_38-retracted. Original tag
830 :			(Release_110_38) removed. Reason: Last-minute bug fixes.
831 :
832 :	blume	1037	----------------------------------------------------------------------
833 :			Name: Matthias Blume
834 :	blume	1036	Date: 2002/01/25
835 :			Tag: blume-20020125-ffi
836 :			Description:
837 :
838 :			A large number of tweaks and improvements to ml-nlffi-lib and
839 :			ml-nlffigen:
840 :
841 :			- ML represenation types have been streamlined
842 :			- getter and setter functions work with concrete values, not abstract
843 :			ones where possible
844 :			- ml-nlffigen command line more flexible (see README file there)
845 :			- some bugs have been fixed (hopefully)
846 :
847 :			----------------------------------------------------------------------
848 :	george	1034	Name: Lal George
849 :			Date: 2002/01/24
850 :			Tag: george-20020124-risc-ra-interface
851 :			Description:
852 :
853 :			There is a dramatic simplification in the interface to the
854 :			register allocator for RISC architectures as a result of making
855 :			parallel copy instructions explicit.
856 :
857 :			----------------------------------------------------------------------
858 :	blume	1028	Name: Matthias Blume
859 :	blume	1032	Date: 2002/01/22
860 :			Tag: blume-20020122-x86-ccalls
861 :			Description:
862 :
863 :			Bug fix for c-calls on x86 (having to do with how char- and
864 :			short-arguments are being handled).
865 :
866 :			----------------------------------------------------------------------
867 :			Name: Matthias Blume
868 :	blume	1031	Date: 2002/01/21
869 :			Tag: blume-20020121-ff
870 :			Description:
871 :
872 :			Another day of fiddling with the FFI...
873 :
874 :			1. Bug fix/workaround: CKIT does not complain about negative array
875 :			dimensions, so ml-nlffigen has to guard itself against this possibility.
876 :			(Otherwise a negative dimension would send it into an infinite loop.)
877 :
878 :			2. Some of the abstract types (light objects, light pointers, most "base"
879 :			types) in structure C are now eqtypes.
880 :
881 :			3. Added constructors and test functions for NULL function pointers.
882 :
883 :			----------------------------------------------------------------------
884 :			Name: Matthias Blume
885 :	blume	1028	Date: 2002/01/18
886 :	blume	1030	Tag: blume-20020118-ready-for-new-release
887 :			Description:
888 :
889 :			Made config/srcarchiveurl point to a new place. (Will provide boot
890 :			files shortly.)
891 :
892 :			Maybe we christen this to be 110.38?
893 :
894 :			----------------------------------------------------------------------
895 :			Name: Matthias Blume
896 :			Date: 2002/01/18
897 :	blume	1029	Tag: blume-20020118-more-ffifiddle
898 :			Description:
899 :
900 :			Today's FFI fiddling:
901 :
902 :			- Provided a structure CGetSet with "convenient" versions of C.Get.* and
903 :			C.Set.* that use concrete (MLRep.*) arguments and results instead
904 :			of abstract ones.
905 :
906 :			- Provided word-style bit operations etc. for "int" representation
907 :			types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
908 :			and Long.
909 :
910 :			----------------------------------------------------------------------
911 :			Name: Matthias Blume
912 :			Date: 2002/01/18
913 :	blume	1028	Tag: blume-20020118-use-x86-fp
914 :			Description:
915 :
916 :			Now that x86-fast-fp seems to be working, I turned it back on again
917 :			by default. (Seems to work fine now, even with the FFI.)
918 :
919 :			Other than that, I added some documentation about the FFI to
920 :			src/ml-nlffigen/README and updated the FFI test examples in
921 :			src/ml-nlffi-lib/Tests/*.
922 :
923 :			----------------------------------------------------------------------
924 :	leunga	1025	Name: Allen Leung
925 :			Date: 2002/01/17
926 :			Tag: leunga-20020117-x86-fast-fp-call
927 :			Description:
928 :
929 :			1. Fixed a problem with handling return fp values when x86's fast fp
930 :			mode is turned on.
931 :
932 :			2. Minor pretty printing fix for cellset. Print %st(0) as %st(0) instead
933 :			of %f32.
934 :
935 :			3. Added a constructor INT32lit to the ast of MLRISC tools.
936 :
937 :			----------------------------------------------------------------------
938 :	blume	1021	Name: Matthias Blume
939 :			Date: 2002/01/16
940 :			Tag: blume-20020116-ffifiddle
941 :			Description:
942 :
943 :			More fiddling with the FFI interface:
944 :
945 :			- Make constness 'c instead of rw wherever possible. This eliminates
946 :			the need for certain explicit coercions. (However, due to ML's
947 :			value polymorphism, there will still be many cases where explicit
948 :			coercions are necessary. Phantom types are not the whole answer
949 :			to modeling a subtyping relationship in ML.)
950 :
951 :			- ro/rw coersions for pointers added. (Avoids the detour through */&.)
952 :
953 :			- "printf" test example added to src/ml-nlffi-lib/Tests. (Demonstrates
954 :			clumsy workaround for varargs problem.)
955 :
956 :			----------------------------------------------------------------------
957 :	george	1016	Name: Lal George
958 :			Date: 2002/01/15
959 :			Tag: <none>
960 :			Description:
961 :
962 :			1. Since COPY instructions are no longer native to the architecture,
963 :			a generic functor can be used to implement the expandCopies function.
964 :
965 :			2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
966 :			TEXT segment.
967 :
968 :			----------------------------------------------------------------------
969 :	blume	1011	Name: Matthias Blume
970 :	blume	1015	Date: 2002/01/15
971 :			Tag: blume-20020115-ffiupdates
972 :			Description:
973 :
974 :			1. Fix for bug resulting in single-precision float values being returned
975 :			incorrectly from FFI calls.
976 :
977 :			2. Small modifications to C FFI API:
978 :
979 :			- memory-allocation routines return straight objects (no options)
980 :			and raise an exception in out-of-memory situations
981 :			- unsafe extensions to cast between function pointers and pointers
982 :			from/to ints
983 :			- added structure C_Debug as an alternative to structure C where
984 :			pointer-dereferencing (|*| and |*!) always check for null-pointers
985 :			- added open_lib' to DynLinkage; open_lib' works like open_lib
986 :			but also takes a (possibly empty) list of existing library handles
987 :			that the current library depends on
988 :
989 :			----------------------------------------------------------------------
990 :			Name: Matthias Blume
991 :	blume	1011	Date: 2002/01/10
992 :			Tag: blume-20020110-newffigen
993 :			Description:
994 :
995 :			1. Updates to portable graph code.
996 :
997 :			2. Major update to ml-nlffigen and ml-nlffi-lib. Things are much
998 :			more scalable now so that even huge interfaces such as the one
999 :			for GTK compile in finite time and space. :-)
1000 :			See src/ml-nlffigen/README for details on what's new.
1001 :
1002 :			----------------------------------------------------------------------
1003 :	george	1003	Name: Lal George
1004 :	george	1009	Date: 2001/01/09 14:31:35 EST 2002
1005 :			Tag: george-20011206-rm-native-copy
1006 :			Description:
1007 :
1008 :			Removed the native COPY and FCOPY instructions
1009 :			from all the architectures and replaced it with the
1010 :			explicit COPY instruction from the previous commit.
1011 :
1012 :			It is now possible to simplify many of the optimizations
1013 :			modules that manipulate copies. This has not been
1014 :			done in this change.
1015 :
1016 :			----------------------------------------------------------------------
1017 :			Name: Lal George
1018 :	george	1003	Date: 2001/12/06 16:50:13 EST 2001
1019 :			Tag: george-20011206-mlrisc-instruction
1020 :			Description:
1021 :	george	824
1022 :	george	1003	Changed the representation of instructions from being fully abstract
1023 :			to being partially concrete. That is to say:
1024 :
1025 :			from
1026 :			type instruction
1027 :
1028 :			to
1029 :			type instr (* machine instruction *)
1030 :
1031 :			datatype instruction =
1032 :			LIVE of {regs: C.cellset, spilled: C.cellset}
1033 :			| KILL of {regs: C.cellset, spilled: C.cellset}
1034 :			| COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
1035 :			| ANNOTATION of {i: instruction, a: Annotations.annotation}
1036 :			| INSTR of instr
1037 :
1038 :			This makes the handling of certain special instructions that appear on
1039 :			all architectures easier and uniform.
1040 :
1041 :			LIVE and KILL say that a list of registers are live or killed at the
1042 :			program point where they appear. No spill code is generated when an
1043 :			element of the 'regs' field is spilled, but the register is moved to
1044 :			the 'spilled' (which is present, more for debugging than anything else).
1045 :
1046 :			LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
1047 :			We used to generate:
1048 :
1049 :			DEFFREG f1
1050 :			f1 := f2 + f3
1051 :			trapb
1052 :
1053 :			but now generate:
1054 :
1055 :			f1 := f2 + f3
1056 :			trapb
1057 :			LIVE {regs=[f1,f2,f3], spilled=[]}
1058 :
1059 :			Furthermore, the DEFFREG (hack) required that all floating point instruction
1060 :			use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
1061 :			defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
1062 :			in a cleaner alpha implementation. (Hopefully, intel will not get rid of
1063 :			this architecture).
1064 :
1065 :			COPYXXX is intended to replace the parallel COPY and FCOPY available on
1066 :			all the architectures. This will result in further simplification of the
1067 :			register allocator that must be aware of them for coalescing purposes, and
1068 :			will also simplify certain aspects of the machine description that provides
1069 :			callbacks related to parallel copies.
1070 :
1071 :			ANNOTATION should be obvious, and now INSTR represents the honest to God
1072 :			machine instruction set!
1073 :
1074 :			The <arch>/instructions/<arch>Instr.sml files define certain utility
1075 :			functions for making porting easier -- essentially converting upper case
1076 :			to lower case. All machine instructions (of type instr) are in upper case,
1077 :			and the lower case form generates an MLRISC instruction. For example on
1078 :			the alpha we have:
1079 :
1080 :			datatype instr =
1081 :			LDA of {r:cell, b:cell, d:operand}
1082 :			| ...
1083 :
1084 :			val lda : {r:cell, b:cell, d:operand} -> instruction
1085 :			...
1086 :
1087 :			where lda is just (INSTR o LDA), etc.
1088 :
1089 :	leunga	815	----------------------------------------------------------------------
1090 :	blume	986	Name: Matthias Blume
1091 :	blume	993	Date: 2001/11/22 21:40:00 EST
1092 :			Tag: Release_110_37
1093 :			Description:
1094 :
1095 :			Release 110.37. This time for real.
1096 :
1097 :			----------------------------------------------------------------------
1098 :			Name: Matthias Blume
1099 :	blume	988	Date: 2001/11/21 16:35:00 EST
1100 :			Tag: blume-20011121-foot-in-mouth
1101 :			Description:
1102 :
1103 :			Removed the "Release_110_37" tag because of a serious bug.
1104 :			This will be re-tagged once the bug is fixed.
1105 :
1106 :			----------------------------------------------------------------------
1107 :			Name: Matthias Blume
1108 :	blume	987	Date: 2001/11/21 16:14:00 EST
1109 :			Tag: blume-20011121-forgottenfile
1110 :			Description:
1111 :
1112 :			Forgot to add a file. (Just a .tex-file -- part of
1113 :			the CM manual source.)
1114 :
1115 :			----------------------------------------------------------------------
1116 :			Name: Matthias Blume
1117 :	blume	986	Date: 2001/11/21 16:10:00 EST
1118 :	blume	988	Tag: blume-20011121-invalid_110_37
1119 :	blume	986	Description:
1120 :
1121 :	blume	988	Note: I removed the original tag "Release_110_37" from this commit
1122 :			because we found a serious bug in all non-x86 backends.
1123 :			- Matthias
1124 :
1125 :	blume	986	1. Modifications to the SML/NJ code generator and to the runtime system
1126 :			so that code object name strings are directly inserted into code
1127 :			objects at code generation time. The only business the runtime system
1128 :			has with this is now to read the name strings on occasions.
1129 :			(The encoding of the name string has also changed somewhat.)
1130 :
1131 :			2. CM now implements a simple "set calculus" for specifying export lists.
1132 :			In particular, it is now possible to refer to the export lists of
1133 :			other libraries/groups/sources and form unions as well as differences.
1134 :			See the latest CM manual for details.
1135 :
1136 :			3. An separate notion of "proxy" libraries has again be eliminated from
1137 :			CM's model. (Proxy libraries are now simply a special case of using
1138 :			the export list calculus.)
1139 :
1140 :			4. Some of the existing libraries now take advantage of the new set
1141 :			calculus.
1142 :			(Notice that not all libraries have been converted because some
1143 :			of the existing .cm-files are supposed to be backward compatible
1144 :			with 110.0.x.)
1145 :
1146 :			5. Some cleanup in stand-alone programs. (Don't use "exnMessage" -- use
1147 :			"General.exnMessage"! The former relies on a certain hook to be
1148 :			initialized, and that often does not happen in the stand-alone case.)
1149 :
1150 :			----------------------------------------------------------------------
1151 :	george	984	Name: Lal George
1152 :			Date: 2001/11/21 13:56:18 EST
1153 :			Tag: george-2001121-pseudo-ops
1154 :			Description:
1155 :
1156 :			Implemented a complete redesign of MLRISC pseudo-ops. Now there
1157 :			ought to never be any question of incompatabilities with
1158 :			pseudo-op syntax expected by host assemblers.
1159 :
1160 :			For now, only modules supporting GAS syntax are implemented
1161 :			but more should follow, such as MASM, and vendor assembler
1162 :			syntax, e.g. IBM as, Sun as, etc.
1163 :
1164 :			----------------------------------------------------------------------
1165 :	blume	977	Name: Matthias Blume
1166 :			Date: 2001/11/14 11:52:00 EST
1167 :			Tag: blume-20011114-srcname
1168 :			Description:
1169 :
1170 :			1. Routed the name of the current source file to mlriscgen where it
1171 :			should be directly emitted into the code object. (This last part
1172 :			is yet to be done.)
1173 :
1174 :			2. Some cleanup of the pgraph code to make it match the proposal that
1175 :			I put out the other day. (The proposal notwithstanding, things are
1176 :			still in flux here.)
1177 :
1178 :			----------------------------------------------------------------------
1179 :	george	976	Name: Lal George
1180 :			Date: 2001/11/14 09:44:04 EST
1181 :			Tag:
1182 :			Description:
1183 :
1184 :			Fix for a backpatching bug reported by Allen.
1185 :
1186 :			Because the boundary between short and long span-dependent
1187 :			instructions is +/- 128, there are an astounding number of
1188 :			span-dependent instructions whose size is over estimated.
1189 :
1190 :			Allen came up with the idea of letting the size of span
1191 :			dependent instructions be non-monotonic, for a maxIter
1192 :			number of times, after which the size must be monotonically
1193 :			increasing.
1194 :
1195 :			This table shows the number of span-dependent instructions
1196 :			whose size was over-estimated as a function of maxIter, for the
1197 :			file Parse/parse/ml.grm.sml:
1198 :
1199 :			maxIter # of instructions:
1200 :			10 687
1201 :			20 438
1202 :			30 198
1203 :			40 0
1204 :
1205 :			In compiling the compiler, there is no significant difference in
1206 :			compilation speed between maxIter=10 and maxIter=40. Actually,
1207 :			my measurements showed that maxIter=40 was a tad faster than
1208 :			maxIter=10! Also 96% of the files in the compiler reach a fix
1209 :			point within 13 iterations, so fixing maxIter at 40, while high,
1210 :			is okay.
1211 :
1212 :			----------------------------------------------------------------------
1213 :	blume	975	Name: Matthias Blume
1214 :			Date: 2001/10/31 15:25:00 EST
1215 :			Tag: blume-20011031-pgraph
1216 :			Description:
1217 :
1218 :			CKIT:
1219 :			* Changed the "Function" constructor of type Ast.ctype to carry optional
1220 :			argument identifiers.
1221 :			* Changed the return type of TypeUtil.getFunction accordingly.
1222 :			* Type equality ignores the argument names.
1223 :			* TypeUtil.composite tries to preserve argument names but gives up quickly
1224 :			if there is a mismatch.
1225 :
1226 :			installation script:
1227 :			* attempts to use "curl" if available (unless "wget" is available as well)
1228 :
1229 :			CM:
1230 :			* has an experimental implementation of "portable graphs" which I will
1231 :			soon propose as an implementation-independent library format
1232 :			* there are also new libraries $/pgraph.cm and $/pgraph-util.cm
1233 :
1234 :			NLFFI-LIB:
1235 :			* some cleanup (all cosmetic)
1236 :
1237 :			NLFFIGEN:
1238 :			* temporarily disabled the mechanism that suppresses ML output for
1239 :			C definitions whose identifiers start with an underscore character
1240 :			* generate val bindings for enum constants
1241 :			* user can request that only one style (light or heavy) is being used;
1242 :			default is to use both (command-line arguments: -heavy and -light)
1243 :			* fixed bug in handling of function types involving incomplete pointers
1244 :			* generate ML entry points that take record arguments (i.e., using
1245 :			named arguments) for C functions that have a prototype with named
1246 :			arguments
1247 :			(see changes to CKIT)
1248 :
1249 :			----------------------------------------------------------------------
1250 :	leunga	972	Name: Allen Leung
1251 :			Date: 2001/10/27 20:34:00 EDT
1252 :			Tag: leunga-20011027-x86-fast-fp-call
1253 :			Description:
1254 :
1255 :			Fixed the bug described in blume-20010920-slowfp.
1256 :
1257 :			The fix involves
1258 :			1. generating FCOPYs in FSTP in ia32-svid
1259 :			2. marking a CALL with the appropriate annotation
1260 :
1261 :			----------------------------------------------------------------------
1262 :	blume	961	Name: Matthias Blume
1263 :			Date: 2001/10/16 11:32:00 EDT
1264 :			Tag: blume-20011016-netbsd
1265 :			Description:
1266 :
1267 :			Underscore patch from Chris Richards (fixing problem with compiling
1268 :			runtime system under recent NetBSD).
1269 :
1270 :			----------------------------------------------------------------------
1271 :	george	959	Name: Allen Leung
1272 :			Date: 2001/10/12 17:18:32 EDT 2001
1273 :			Tag: leung-20011012-x86-printflowgraph
1274 :			Description:
1275 :
1276 :			X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
1277 :
1278 :			----------------------------------------------------------------------
1279 :	george	952	Name: Lal George
1280 :	george	958	Date: 2001/10/11 23:51:34 EDT
1281 :			Tag: george-20011011-too-many-instrs
1282 :			Description:
1283 :
1284 :			The representation of a program point never expected to see more
1285 :			than 65536 instructions in a basic block!
1286 :
1287 :			----------------------------------------------------------------------
1288 :			Name: Lal George
1289 :	george	952	Date: 2001/10/09 09:41:37 EDT
1290 :			Tag: george-20011008-mlrisc-labels
1291 :			Description:
1292 :
1293 :			Changed the machine description files to support printing of
1294 :			local and global labels in assembly code, based on host assembler
1295 :			conventions.
1296 :
1297 :			----------------------------------------------------------------------
1298 :	blume	916	Name: Matthias Blume
1299 :	blume	939	Date: 2001/09/25 15:25:00 EDT
1300 :			Tag: blume-20010925-exninfo
1301 :			Description:
1302 :
1303 :			I provided a non-hook implementation of exnName (at the toplevel) and
1304 :			made the "dummy" implementation of exnMessage (at the toplevel) more
1305 :			useful: if nothing gets "hooked in", then at least you are going to
1306 :			see the exception name and a message indicating why you don't see more.
1307 :
1308 :			[For the time being, programs that need exnMessage and want to use
1309 :			ml-build should either use General.exnMessage (strongly recommended) or
1310 :			refer to structure General at some other point so that CM sees a
1311 :			static dependency.]
1312 :
1313 :			[Similar remarks go for "print" and "use": If you want to use their
1314 :			functionality in stand-alone programs generated by ml-build, then use
1315 :			TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
1316 :
1317 :			----------------------------------------------------------------------
1318 :			Name: Matthias Blume
1319 :	blume	938	Date: 2001/09/20 17:28:00 EDT
1320 :			Tag: blume-20010920-slowfp
1321 :			Description:
1322 :
1323 :			Allen says that x86-fast-fp is not safe yet, so I turned it off again...
1324 :
1325 :			----------------------------------------------------------------------
1326 :			Name: Matthias Blume
1327 :	blume	937	Date: 2001/09/20 17:20:00 EDT
1328 :			Tag: blume-20010920-canonicalpaths
1329 :			Description:
1330 :
1331 :			0. Updated the BOOT file (something that I forgot to do earlier).
1332 :
1333 :			1. Small internal change to CM so that it avoids "/../" in filenames
1334 :			as much as possible (but only where it is safe).
1335 :
1336 :			2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
1337 :			that arguments that contain delimiters are passed through correctly.
1338 :			This change also means that all "special" arguments of the form
1339 :			@SMLxxx... must come first.
1340 :
1341 :			3. Changed install script to put relative anchor names for tool commands
1342 :			into pathconfig.
1343 :
1344 :			----------------------------------------------------------------------
1345 :			Name: Matthias Blume
1346 :	blume	932	Date: 2001/09/18 15:35:00 EDT
1347 :			Tag: blume-20010918-readme11036
1348 :			Description:
1349 :
1350 :			Added README files.
1351 :
1352 :			----------------------------------------------------------------------
1353 :			Name: Matthias Blume
1354 :	blume	929	Date: 2001/09/18 11:45:00 EDT
1355 :			Tag: Release_110_36 (retag)
1356 :			Description:
1357 :
1358 :			Fixed mistake in config/preloads. Retagged as 110.36.
1359 :
1360 :			----------------------------------------------------------------------
1361 :			Name: Matthias Blume
1362 :	blume	928	Date: 2001/09/18 09:40:00 EDT
1363 :	blume	929	Tag: Release_110_36_orig (tag changed)
1364 :	blume	928	Description:
1365 :
1366 :			New version (110.36). New bootfiles.
1367 :
1368 :			----------------------------------------------------------------------
1369 :			Name: Matthias Blume
1370 :	blume	927	Date: 2001/09/14 16:15:00 EDT
1371 :			Tag: blume-20010914-x86fastfp
1372 :			Description:
1373 :
1374 :			John committed some changes that Allen made, in particular a (hopefully)
1375 :			correctly working version of the x86-fp module.
1376 :
1377 :			I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
1378 :			flag to "true". Everything seems to compile to a fixpoint ok, and
1379 :			"mandelbrot" speeds up by about 15%.
1380 :
1381 :			----------------------------------------------------------------------
1382 :			Name: Matthias Blume
1383 :	blume	923	Date: 2001/09/13 11:20:00 EDT
1384 :			Tag: blume-20010913-minimal
1385 :			Description:
1386 :
1387 :			1. Stefan Monnier's patch to fix a miscompilation problem that
1388 :			was brought to light by John Reppy's work on Moby.
1389 :
1390 :			2. Implemented a minimal "structure Compiler" that contains just
1391 :			"version" and "architecture". The minimal version will be
1392 :			available when the full version is not. This is for backward-
1393 :			compatibility with code that wants to test Compiler.version.
1394 :
1395 :			----------------------------------------------------------------------
1396 :			Name: Matthias Blume
1397 :	blume	920	Date: 2001/08/28 14:03:00 EDT
1398 :			Tag: blume-20010828-ml-lex
1399 :			Description:
1400 :
1401 :			Fix for bug 1581, received from Neophytos Michael.
1402 :
1403 :			----------------------------------------------------------------------
1404 :			Name: Matthias Blume
1405 :	blume	918	Date: 2001/08/27 11:20:00 EDT
1406 :			Tag: blume-20010827-readme11035
1407 :			Description:
1408 :
1409 :			Fleshed out the README file for 110.35.
1410 :
1411 :			----------------------------------------------------------------------
1412 :			Name: Matthias Blume
1413 :	blume	916	Date: 2001/08/24 17:10:00 EDT
1414 :			Tag: Release_110_35
1415 :			Description:
1416 :
1417 :			New version number (110.35). New bootfiles.
1418 :
1419 :			----------------------------------------------------------------------
1420 :	george	915	Name: Lal George
1421 :	george	909	Date: 2001/08/24 13:47:18 EDT 2001
1422 :			Tag: george-20010824-MLRISC-graphs
1423 :			Description:
1424 :
1425 :			removed clusters from MLRISC completely and replaced with graphs.
1426 :
1427 :			----------------------------------------------------------------------
1428 :			Name: Matthias Blume
1429 :	blume	905	Date: 2001/08/23 17:50:00 EDT
1430 :			Tag: blume-20010823-toplevel
1431 :			Description:
1432 :
1433 :			- some reorganization of the code that implements various kinds of
1434 :			environments in the compiler (static, dynamic, symbolic, combined)
1435 :			- re-implemented the EnvRef module so that evalStream works properly
1436 :			(if the stream contains references to "use", "CM.make", etc.)
1437 :			- cleaned up evalloop.sml and interact.sml (but they need more cleaning)
1438 :
1439 :			----------------------------------------------------------------------
1440 :			Name: Matthias Blume
1441 :	blume	904	Date: 2001/08/20 15:50 EDT
1442 :			Tag: blume20010820-slipup
1443 :			Description:
1444 :
1445 :			I forgot to commit a few files. Here they are...
1446 :
1447 :			----------------------------------------------------------------------
1448 :			Name: Matthias Blume
1449 :	blume	903	Date: 2001/08/20 15:35:00 EDT
1450 :			Tag: blume-20010820-debugprof
1451 :			Description:
1452 :
1453 :			!!!! NEW BOOTFILES !!!!
1454 :
1455 :			This is another round of reorganizing the compiler sources. This
1456 :			time the main goal was to factor out all the "instrumentation"
1457 :			passes (for profiling and backtracing) into their own library.
1458 :			The difficulty was to do it in such a way that it does not depend
1459 :			on elaborate.cm but only on elabdata.cm.
1460 :
1461 :			Therefore there have been further changes to both elaborate.cm and
1462 :			elabdata.cm -- more "generic" things have been moved from the former
1463 :			to the latter. As a result, I was forced to split the assignment
1464 :			of numbers indicating "primtyc"s into two portions: SML-generic and
1465 :			SML/NJ-specific. Since it would have been awkward to maintain,
1466 :			I bit the bullet and actually _changed_ the mapping between these
1467 :			numbers and primtycs. The bottom line of this is that you need
1468 :			a new set of bin- and bootfiles.
1469 :
1470 :			I have built new bootfiles for all architectures, so doing a fresh
1471 :			checkout and config/install.sh should be all you need.
1472 :
1473 :			The newly created library's name is
1474 :
1475 :			$smlnj/viscomp/debugprof.cm
1476 :
1477 :			and its sources live under
1478 :
1479 :			src/compiler/DebugProf
1480 :
1481 :			----------------------------------------------------------------------
1482 :			Name: Matthias Blume
1483 :	blume	902	Date: 2001/08/15 17:15:00 EDT
1484 :			Tag: blume-20010815-compreorg
1485 :			Description:
1486 :
1487 :			This is a first cut at reorganizing the CM libraries that make up the
1488 :			core of the compiler. The idea is to separate out pieces that could
1489 :			be used independently by tools, e.g., the parser, the typechecker, etc.
1490 :
1491 :			The current status is a step in this direction, but it is not quite
1492 :			satisfactory yet. Expect more changes in the future.
1493 :
1494 :			Here is the current (new) organization...
1495 :
1496 :			What used to be $smlnj/viscomp/core.cm is now divided into
1497 :			six CM libraries:
1498 :
1499 :			$smlnj/viscomp/basics.cm
1500 :			/parser.cm
1501 :			/elabdata.cm
1502 :			/elaborate.cm
1503 :			/execute.cm
1504 :			/core.cm
1505 :
1506 :			The CM files for these libraries live under src/system/smlnj/viscomp.
1507 :			All these libraries are proxy libraries that contain precisely
1508 :			one CM library component. Here are the locations of the components
1509 :			(all within the src/compiler tree):
1510 :
1511 :			Basics/basics.cm
1512 :			Parse/parser.cm
1513 :			ElabData/elabdata.cm
1514 :			Elaborator/elaborate.cm
1515 :			Execution/execute.cm
1516 :			core.cm
1517 :
1518 :			[This organization is the same that has been used already
1519 :			for a while for the architecture-specific parts of the visible
1520 :			compiler and for the old version of core.cm.]
1521 :
1522 :			As you will notice, many source files have been moved from their
1523 :			respective original locations to a new home in one of the above
1524 :			subtrees.
1525 :
1526 :			The division of labor between the new libraries is the following:
1527 :
1528 :			basics.cm:
1529 :			- Simple, basic definitions that pertain to many (or all) of
1530 :			the other libraries.
1531 :			parser.cm:
1532 :			- The SML parser, producing output of type Ast.dec.
1533 :			- The type family for Ast is also defined and exported here.
1534 :			elabdata.cm:
1535 :			- The datatypes that describe input and output of the elaborator.
1536 :			This includes types, absyn, and static environments.
1537 :			elaborator.cm:
1538 :			- The SML/NJ type checker and elaborator.
1539 :			This maps an Ast.dec (with a given static environment) to
1540 :			an Absyn.dec (with a new static environment).
1541 :			- This libraries implements certain modules that used to be
1542 :			structures as functors (to remove dependencies on FLINT).
1543 :			execute.cm:
1544 :			- Everything having to do with executing binary code objects.
1545 :			- Dynamic environments.
1546 :			core.cm:
1547 :			- SML/NJ-specific instantiations of the elaborator and MLRISC.
1548 :			- Top-level modules.
1549 :			- FLINT (this should eventually become its own library)
1550 :
1551 :			Notes:
1552 :
1553 :			I am not 100% happy with the way I separated the elaborator (and its
1554 :			data structures) from FLINT. Two instances of the same problem:
1555 :
1556 :			1. Data structures contain certain fields that carry FLINT-specific
1557 :			information. I hacked around this using exn and the property list
1558 :			module from smlnj-lib. But the fact that there are middle-end
1559 :			specific fields around at all is a bit annoying.
1560 :
1561 :			2. The elaborator calculates certain FLINT-related information. I tried
1562 :			to make this as abstract as I could using functorization, but, again,
1563 :			the fact that the elaborator has to perform calculations on behalf
1564 :			of the middle-end at all is not nice.
1565 :
1566 :			3. Having to used exn and property lists is unfortunate because it
1567 :			weakens type checking. The other alternative (parameterizing
1568 :			nearly *everything*) is not appealing, though.
1569 :
1570 :			I removed the "rebinding =" warning hack because due to the new organization
1571 :			it was awkward to maintain it. As a result, the compiler now issues some of
1572 :			these warnings when compiling init.cmi during bootstrap compilation. On
1573 :			the plus side, you also get a warning when you do, for example:
1574 :			val op = = Int32.+
1575 :			which was not the case up to now.
1576 :
1577 :			I placed "assign" and "deref" into the _Core structure so that the
1578 :			code that deals with the "lazy" keyword can find them there. This
1579 :			removes the need for having access to the primitive environment
1580 :			during elaboration.
1581 :
1582 :			----------------------------------------------------------------------
1583 :			Name: Matthias Blume
1584 :	blume	898	Date: 2001/08/13
1585 :			Tag: blume-20010813-closures
1586 :			Description:
1587 :
1588 :			This fix was sent to us by Zhong Shao. It is supposed to improve the
1589 :			performance of certain loops by avoiding needless closure allocation.
1590 :
1591 :			----------------------------------------------------------------------
1592 :	george	890	Name: Lal George
1593 :	george	896	Date: 2001/07/31 10:03:23 EDT 2001
1594 :			Tag: george-20010731-x86-fmalloc
1595 :			Description: Fixed bug in x86 calls
1596 :
1597 :			There was a bug where call instructions would mysteriously
1598 :			vanish. The call instruction had to be one that returned
1599 :			a floating point value.
1600 :
1601 :			----------------------------------------------------------------------
1602 :			Name: Lal George
1603 :	george	890	Date: 2001/07/19 16:36:29 EDT 2001
1604 :			Tag: george-20010719-simple-cells
1605 :			Description:
1606 :
1607 :			I have dramatically simplified the interface for CELLS in MLRISC.
1608 :
1609 :			In summary, the cells interface is broken up into three parts:
1610 :
1611 :			1. CellsBasis : CELLS_BASIS
1612 :
1613 :			CellsBasis is a top level structure and common for all
1614 :			architectures. it contains the definitions of basic datatypes
1615 :			and utility functions over these types.
1616 :
1617 :			2. functor Cells() : CELLS
1618 :
1619 :			Cells generates an interface for CELLS that incorporates the
1620 :			specific resources on the target architecture, such as the
1621 :			presence of special register classes, their number and size,
1622 :			and various useful substructures.
1623 :
1624 :			3. <ARCH>CELLS
1625 :
1626 :			e.g. SparcCells: SPARCCELLS
1627 :
1628 :			<ARCH>CELLS usually contains additional bindings for special
1629 :			registers on the architecture, such as:
1630 :
1631 :			val r0 : cell (* register zero *)
1632 :			val y : cell (* Y register *)
1633 :			val psr : cell (* processor status register *)
1634 :			...
1635 :
1636 :			The structure returned by applying the Cells functor is opened
1637 :			in this interface.
1638 :
1639 :			The main implication of all this is that the datatypes for cells is
1640 :			split between CellsBasis and CELLS -- a fairly simple change for user
1641 :			code.
1642 :
1643 :			In the old scheme the CELLS interface had a definitional binding of
1644 :			the form:
1645 :
1646 :			signature CELLS = sig
1647 :
1648 :			structure CellsBasis = CellsBasis
1649 :
1650 :			...
1651 :
1652 :			end
1653 :
1654 :			With all the sharing constraints that goes on in MLRISC, this old
1655 :			design quickly leads to errors such as:
1656 :
1657 :			"structure definition spec inside of sharing ... "
1658 :
1659 :
1660 :			and appears to require an unacceptable amount of sharing and where
1661 :			constraint hackery.
1662 :
1663 :			I think this error message (the interaction of definitional specs and
1664 :			sharing) requires more explanation on our web page.
1665 :
1666 :			----------------------------------------------------------------------
1667 :	blume	826	Name: Matthias Blume
1668 :	blume	879	Date: 2001/07/19 15:00:00 EDT
1669 :			Tag: blume-20010719-libreorg
1670 :			Description:
1671 :
1672 :			This update puts together a fairly extensive but straightforward change
1673 :			to the way the libraries that implement the interactive system are
1674 :			organized:
1675 :
1676 :			The biggest change is the elimination of structure Compiler. As a
1677 :			replacement for this structure, there is now a CM library
1678 :			(known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
1679 :			that exports all the substructures of the original structure Compiler
1680 :			directly. So instead of saying Compiler.Foo.bar one now simply
1681 :			says Foo.bar. (The CM libraries actually export a collection of
1682 :			structures that is richer than the collection of substructures of
1683 :			structure Compiler.)
1684 :
1685 :			To make the transition smooth, there is a separate library called
1686 :			$smlnj/compiler/compiler.cm which puts together and exports the
1687 :			original structure Compiler (or at least something very close to it).
1688 :
1689 :			There are five members of the original structure Compiler
1690 :			that are not exported directly but which instead became members
1691 :			of a new structure Backend (described by signature BACKEND). These are:
1692 :			structure Profile (: PROFILE), structure Compile (: COMPILE), structure
1693 :			Interact (: INTERACT), structure Machine (: MACHINE), and val
1694 :			architecture (: string).
1695 :
1696 :			Structure Compiler.Version has become structure CompilerVersion.
1697 :
1698 :			Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
1699 :			by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
1700 :			or x86, respectively.
1701 :			Each of these exports the same frontend structures that
1702 :			$smlnj/compiler.cm exports. But they do not have a structure Backend
1703 :			and instead export some structure <Arch>Backend where <Arch> is Alpha32,
1704 :			Hppa, PPC, Sparc, or X86, respectively.
1705 :
1706 :			Library $smlnj/compiler/all.cm exports the union of the exports of
1707 :			$smlnj/compiler/<arch>.cm
1708 :
1709 :			There are no structures <Arch>Compiler anymore, use
1710 :			$smlnj/compiler/<arch>.cm instead.
1711 :
1712 :			Library host-compiler-0.cm is gone. Instead, the internal library
1713 :			that instantiates CM is now called cm0.cm. Selection of the host
1714 :			compiler (backend) is no longer done here but. (Responsibility for it
1715 :			now lies with $smlnj/compiler/current.cm. This seems to be more
1716 :			logical.)
1717 :
1718 :			Many individual files have been moved or renamed. Some files have
1719 :			been split into multiple files, and some "dead" files have been deleted.
1720 :
1721 :			Aside from these changes to library organization, there are also changes
1722 :			to the way the code itself is organized:
1723 :
1724 :			Structure Binfile has been re-implemented in such a way that it no
1725 :			longer needs any knowledge of the compiler. It exclusively deals
1726 :			with the details of binfile layout. It no longer invokes the
1727 :			compiler (for the purpose of creating new prospective binfile
1728 :			content), and it no longer has any knowledge of how to interpret
1729 :			pickles.
1730 :
1731 :			Structure Compile (: COMPILE) has been stripped down to the bare
1732 :			essentials of compilation. It no longer deals with linking/execution.
1733 :			The interface has been cleaned up considerably.
1734 :
1735 :			Utility routines for dealing with linking and execution have been
1736 :			moved into their own substructures.
1737 :
1738 :			(The ultimate goal of these changes is to provide a light-weight
1739 :			binfile loader/linker (at least for, e.g., stable libraries) that
1740 :			does not require CM or the compiler to be present.)
1741 :
1742 :			CM documentation has been updated to reflect the changes to library
1743 :			organization.
1744 :
1745 :			----------------------------------------------------------------------
1746 :			Name: Matthias Blume
1747 :	blume	875	Date: 2001/07/10 17:30:00 EDT
1748 :			Tag: Release_110_34
1749 :			Description:
1750 :
1751 :	blume	876	Minor tweak to 110.34 (re-tagged):
1752 :
1753 :			- README.html file added to CVS repository
1754 :			- runtime compiles properly under FreeBSD 3.X and 4.X
1755 :
1756 :			----------------------------------------------------------------------
1757 :			Name: Matthias Blume
1758 :			Date: 2001/07/10 17:30:00 EDT
1759 :			Tag: Release_110_34
1760 :			Description:
1761 :
1762 :	blume	875	New version number (110.34). New bootfiles.
1763 :
1764 :			----------------------------------------------------------------------
1765 :			Name: Matthias Blume
1766 :	blume	874	Date: 2001/07/09 16:00:00 EDT
1767 :			Tag: blume-20010709-more-varargs
1768 :			Description:
1769 :
1770 :			I changed the handling of varargs in ml-nlffigen again:
1771 :			The ellipsis ... will now simply be ignored (with an accompanying warning).
1772 :
1773 :			The immediate effect is that you can actually call a varargs function
1774 :			from ML -- but you can't actually supply any arguments beyond the ones
1775 :			specified explicitly. (For example, you can call printf with its format
1776 :			string, but you cannot pass additional arguments.)
1777 :
1778 :			This behavior is only marginally more useful than the one before, but
1779 :			it has the advantage that a function or, more importantly, a function
1780 :			type never gets dropped on the floor, thus avoiding follow-up problems with
1781 :			other types that refer to the offending one.
1782 :
1783 :			----------------------------------------------------------------------
1784 :			Name: Matthias Blume
1785 :	blume	873	Date: 2001/07/09 11:25:00 EDT
1786 :			Tag: blume-20010709-varargs
1787 :			Description:
1788 :
1789 :			1. ckit-lib.cm now exports structure Error
1790 :			2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
1791 :			with a warning accompanied by a source location. Moreover, it
1792 :			merely skips the offending function or type and proceeds with the
1793 :			rest of its work.u As a result, one can safely feed C code containing
1794 :			"..." to ml-nlffigen.
1795 :			3. There are some internal improvements to CM, providing slightly
1796 :			more general string substitutions in the tools subsystem.
1797 :
1798 :			----------------------------------------------------------------------
1799 :			Name: Matthias Blume
1800 :	blume	854	Date: 2001/06/27 15:10:00 EDT
1801 :			Tag: blume-20010627-concur
1802 :			Description:
1803 :
1804 :			Fixed a small bug in CM's handling of parallel compilation.
1805 :			(You could observe the bug by Control-C-interrupting an ordinary
1806 :			CMB.make or CM.stabilize and then attaching some compile servers.
1807 :			The result was that all of a sudden the previously interrupted
1808 :			compilation would continue on its own. This was because of
1809 :			an over-optimization: CM did not bother to clean out certain queues
1810 :			when no servers were attached "anyway", resulting in the contents
1811 :			of these queues to grab control when new servers did get attached.)
1812 :
1813 :			There is also another minor update to the CM manual.
1814 :
1815 :			----------------------------------------------------------------------
1816 :			Name: Matthias Blume
1817 :	blume	853	Date: 2001/06/26 16:15:00 EDT
1818 :			Tag: blume-20010626-cmdoc
1819 :			Description:
1820 :
1821 :			Minor typo fixed in CM manual (syntax diagram for libraries).
1822 :
1823 :			----------------------------------------------------------------------
1824 :			Name: Matthias Blume
1825 :	blume	852	Date: 2001/06/25 22:55:00 EDT
1826 :			Tag: blume-20010625-x86pc
1827 :			Description:
1828 :
1829 :			Fixed a nasty bug in the X86 assembly code that caused signal
1830 :			handlers to fail (crash) randomly.
1831 :
1832 :			----------------------------------------------------------------------
1833 :			Name: Matthias Blume
1834 :	blume	846	Date: 2001/06/25 12:05:00 EDT
1835 :			Tag: blume-20010625-nlffigen
1836 :			Description:
1837 :
1838 :			This update fixes a number of minor bugs in ml-nlffigen as reported by
1839 :			Nick Carter <nbc@andrew.cmu.edu>.
1840 :
1841 :			1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
1842 :			2. Default names for generated files are now derived from the name of
1843 :			the C file *without its directory*. In particular, this causes generated
1844 :			files to be placed locally even if the C file is in some system directory.
1845 :			3. Default names for generated signatures and structures are also derived
1846 :			from the C file name without its directory. This avoids silly things
1847 :			like "structure GL/GL".
1848 :			(Other silly names are still possible because ml-nlffigen does not do
1849 :	blume	847	a thorough check of whether generated names are legal ML identifiers.
1850 :			When in doubt, use command line arguments to force particular names.)
1851 :	blume	846
1852 :			----------------------------------------------------------------------
1853 :			Name: Matthias Blume
1854 :	blume	845	Date: 2001/06/21 12:25:00 EDT
1855 :			Tag: blume-20010621-eXene
1856 :			Description:
1857 :
1858 :			eXene now compiles and (sort of) works again.
1859 :
1860 :			The library name (for version > 110.33) is $/eXene.cm.
1861 :
1862 :			I also added an new example in src/eXene/examples/nbody. See the
1863 :			README file there for details.
1864 :
1865 :			----------------------------------------------------------------------
1866 :			Name: Matthias Blume
1867 :	blume	844	Date: 2001/06/20 16:40:00 EDT
1868 :			Tag: blume-20010620-cml
1869 :			Description:
1870 :
1871 :			CML now compiles and works again.
1872 :
1873 :			Libraries (for version > 110.33):
1874 :
1875 :			$cml/cml.cm Main CML library.
1876 :			$cml/basis.cm CML's version of $/basis.cm.
1877 :			$cml/cml-internal.cm Internal helper library.
1878 :			$cml/core-cml.cm Internal helper library.
1879 :			$cml-lib/trace-cml.cm Tracing facility.
1880 :			$cml-lib/smlnj-lib.cm CML's version of $/smlnj-lib.cm
1881 :
1882 :			The installer (config/install.sh) has been taught how to properly
1883 :			install this stuff.
1884 :
1885 :			----------------------------------------------------------------------
1886 :			Name: Matthias Blume
1887 :	blume	843	Date: 2001/06/19 17:55:00 EDT
1888 :			Tag: blume-20010619-instantiate
1889 :			Description:
1890 :
1891 :			This un-breaks the fix for bug 1432.
1892 :			(The bug was originally fixed in 110.9 but I broke it again some
1893 :			time after that.)
1894 :
1895 :			----------------------------------------------------------------------
1896 :			Name: Matthias Blume
1897 :	blume	842	Date: 2001/06/19 17:25:00 EDT
1898 :			Tag: blume-20010619-signals
1899 :			Description:
1900 :
1901 :			This should (hopefully) fix the long-standing signal handling bug.
1902 :			(The runtime system was constructing a continuation record with an
1903 :			incorrect descriptor which would cause the GC to drop data on the floor...)
1904 :
1905 :			----------------------------------------------------------------------
1906 :			Name: Matthias Blume
1907 :	blume	840	Date: 2001/06/15 15:05:00 EDT
1908 :	blume	841	Tag: blume-20010615-moresparc
1909 :			Description:
1910 :
1911 :			Here is a short late-hour update related to Sparc c-calls:
1912 :
1913 :			-- made handling of double-word arguments a bit smarter
1914 :
1915 :			-- instruction selection phase tries to collapse certain clumsily
1916 :			constructed ML-Trees; typical example:
1917 :
1918 :			ADD(ty,ADD(_,e,LI d1),LI d2) -> ADD(ty,e,LI(d1+d2))
1919 :
1920 :			This currently has no further impact on SML/NJ since mlriscGen does
1921 :			not seem to generate such patterns in the first place, and c-calls
1922 :			(which did generate them in the beginning) has meanwhile been fixed
1923 :			so as to avoid them as well.
1924 :
1925 :			----------------------------------------------------------------------
1926 :			Name: Matthias Blume
1927 :			Date: 2001/06/15 15:05:00 EDT
1928 :	blume	840	Tag: blume-20010615-sparc
1929 :			Description:
1930 :
1931 :			The purpose of this update is to provide an implementation of NLFFI
1932 :			on Sparc machines.
1933 :
1934 :			Here are the changes in detail:
1935 :
1936 :			* src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
1937 :			the Sparc implementation of the c-calls API.
1938 :			* The Sparc backend of SML/NJ has been modified to uniformely use %fp
1939 :			for accessing the ML frame. Thus, we have a real frame pointer and
1940 :			can freely modify %sp without need for an omit-frame-ptr phase.
1941 :			The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
1942 :			this case.
1943 :			* ml-nlffigen has been taught to produce code for different architectures
1944 :			and calling conventions.
1945 :			* In a way similar to what was done in the x86 case, the Sparc
1946 :			backend uses its own specific extension to mltree. (For example,
1947 :			it needs to be able to generate UNIMP instructions which are part
1948 :			of the calling convention.)
1949 :			* ml-nlffi-lib was reorganized to make it more modular (in particular,
1950 :			to make it easier to plug in new machine- and os-dependent parts).
1951 :
1952 :			There are some other fairly unrelated bug fixes and cleanups as well:
1953 :
1954 :			* I further hacked the .cm files for MLRISC tools (like MDLGen) so
1955 :			that they properly share their libraries with existing SML/NJ libraries.
1956 :			* I fixed a minor cosmetic bug in CM, supressing certain spurious
1957 :			follow-up error messages.
1958 :			* Updates to CM/CMB documentation.
1959 :
1960 :			TODO items:
1961 :
1962 :			* MLRISC should use a different register as its asmTemp on the Sparc.
1963 :			(The current %o2 is a really bad choice because it is part of the
1964 :			calling conventions, so things might interfere in unexpected ways.)
1965 :
1966 :			----------------------------------------------------------------------
1967 :			Name: Matthias Blume
1968 :	blume	839	Date: 2001/06/07
1969 :			Tag: blume-20010607-calls
1970 :			Description:
1971 :
1972 :			A number of internal changes related to C calls and calling conventions:
1973 :
1974 :			1. ML-Tree CALL statements now carry a "pops" field. It indicates the
1975 :			number of bytes popped implicitly (by the callee). In most cases
1976 :			this field is 0 but on x86/win32 it is some non-zero value. This
1977 :			is information provided for the benefit of the "omit-frameptr" pass.
1978 :			2. The CALL instruction on the x86 carries a similar "pops" field.
1979 :			The instruction selection phase copies its value from the ML-Tree
1980 :			CALL statement.
1981 :			3. On all other architectures, the instruction selection phase checks
1982 :			whether "pops=0" and complains if not.
1983 :			4. The c-calls implementation for x86 now accepts two calling conventions:
1984 :			"ccall" and "stdcall". When "ccall" is selected, the caller cleans
1985 :			up after the call and pops is set to 0. For "stdcall", the caller
1986 :			does nothing, leaving the cleanup to the callee; pops is set to
1987 :			the number of bytes that were pushed onto the stack.
1988 :			5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
1989 :			distinguish between "ccall" and "stdcall".
1990 :			6. The UNIMP instruction has been added to the supported Sparc instruction
1991 :			set. (This is needed for implementing the official C calling convention
1992 :			on this architecture.)
1993 :			7. I fixed some of the .cm files under src/MLRISC/Tools to make them
1994 :			work with the latest CM.
1995 :
1996 :			----------------------------------------------------------------------
1997 :			Name: Matthias Blume
1998 :	blume	838	Date: 2001/06/05 15:10:00 EDT
1999 :			Tag: blume-20010605-cm-index
2000 :			Description:
2001 :
2002 :			0. The "lambdasplit" parameter for class "sml" in CM has been documented.
2003 :
2004 :			1. CM can now generate "index files". These are human-readable files
2005 :			that list on a per-.cm-file basis each toplevel symbol defined or
2006 :			imported. The location of the index file for
2007 :			<p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
2008 :			To enable index-file generation, set CM.Control.generate_index to true
2009 :			or export an environment-symbol: export CM_GENERATE_INDEX=true.
2010 :
2011 :			The CM manual has been updated accordingly.
2012 :
2013 :			2. I made some slight modifications to the c-calls API in MLRISC.
2014 :
2015 :			a) There is now a callback to support saving/restoring of
2016 :			dedicated but caller-save registers around the actual call
2017 :			instruction.
2018 :			b) One can optionally specify a comment-annotation for the
2019 :			call instruction.
2020 :
2021 :			3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
2022 :			(For example, the comment annotation shows the C prototype of
2023 :			the function being called.)
2024 :
2025 :			----------------------------------------------------------------------
2026 :			Name: Matthias Blume
2027 :	blume	837	Date: 2001/06/01 13:30:00 EDT
2028 :			Tag: blume-20010601-nlffi-cleanup
2029 :			Description:
2030 :
2031 :			This is mostly a cleanup of MLFFI stuff:
2032 :
2033 :			- some signature files have been put into a more exposed place
2034 :			- the ugly 'f type parameter is gone (simplifies types tremendously!)
2035 :			- ml-nlffigen changed accordingly
2036 :			- tutorial updated
2037 :
2038 :			Other changes:
2039 :
2040 :			- author's affiliation in CM manual(s) updated
2041 :			- some more recognized keywords added to Allen's sml.sty
2042 :
2043 :			----------------------------------------------------------------------
2044 :			Name: Matthias Blume
2045 :	blume	836	Date: 2001/05/25 15:30:00 EDT
2046 :			Tag: blume-20010525-iptr
2047 :			Description:
2048 :
2049 :			- put the official 110.33-README (as it appears on the ftp server) under
2050 :			CVS
2051 :			- fixed a small bug related to incomplete pointer types in
2052 :			ml-nlffigen
2053 :			- small cosmetic change to the ml-nlffi-lib's "arr" type constructor
2054 :			(it does not need the 'f type parameter)
2055 :
2056 :			----------------------------------------------------------------------
2057 :			Name: Matthias Blume
2058 :	blume	834	Date: 2001/05/23 14:30:00 EDT
2059 :			Tag: Release_110_33
2060 :			Description:
2061 :
2062 :			New version number (110.33). New bootfiles.
2063 :
2064 :			----------------------------------------------------------------------
2065 :			Name: Matthias Blume
2066 :	blume	833	Date: 2001/05/22 18:06:00 EDT
2067 :			Tag: blume-20010522-targets
2068 :			Description:
2069 :
2070 :			Made install.sh use file config/targets.customized if it exists, falling
2071 :			back to config/targets if it doesn't. This way one can have a customized
2072 :			version of the targets file without touching the "real thing", thus
2073 :			eliminating the constant fear of accidentally checking something bogus
2074 :			back into the CVS repository... (File config/targets.customized must
2075 :			not be added to the repository!)
2076 :
2077 :			----------------------------------------------------------------------
2078 :			Name: Matthias Blume
2079 :	blume	832	Date: 2001/05/22 16:30:00 EDT
2080 :			Tag: blume-20010522-minitut
2081 :			Description:
2082 :
2083 :			1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
2084 :			struct returns.
2085 :			2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt. This is some very
2086 :			incomplete, preliminary documentation for NLFFI.
2087 :
2088 :			----------------------------------------------------------------------
2089 :			Name: Matthias Blume
2090 :	blume	829	Date: 2001/05/14 11:30:00 EDT
2091 :			Tag: blume-20010514-script
2092 :			Description:
2093 :
2094 :			Some bugs in install script fixed.
2095 :
2096 :			In addition to that I also made a slight change to the NLFFI API:
2097 :			Functors generated by ml-nlffigen now take the dynamic library as a
2098 :			straight functor argument, not as a suspended one. (The original
2099 :			functor code used to force the suspension right away anyway, so there
2100 :			was nothing gained by this complication of the interface.)
2101 :
2102 :			----------------------------------------------------------------------
2103 :			Name: Matthias Blume
2104 :	blume	828	Date: 2001/05/11 14:35:00 EDT
2105 :			Tag: blume-20010511-ml-nlffi
2106 :			Description:
2107 :
2108 :			I finally took the plunge and added my new FFI code to the main
2109 :			repository. For x86-linux it is now ready for prime-time.
2110 :
2111 :			There are two new subdirectories of "src":
2112 :
2113 :			- ml-nlffi-lib:
2114 :			The utility library for programs using the FFI interface.
2115 :			Here is the implementation of $/c.cm and its associated low-level
2116 :			partners $/c-int.cm and $/memory.cm.
2117 :			- ml-nlffigen:
2118 :			A stand-alone program for generating ML glue code from C source
2119 :			code.
2120 :
2121 :			Building ml-nlffigen requires $/ckit-lib.cm.
2122 :
2123 :			The config/install.sh script has been updates to do the Right Thing
2124 :			(hopefully).
2125 :
2126 :			Notice that the source tree for the C-Kit will not be put under "src"
2127 :			but directly under the installation root directory. (This is the
2128 :			structure that currently exists on the CVS server when you check out
2129 :			module "sml".) Fortunately, config/install.sh knows about this oddity.
2130 :
2131 :			Bugs: No documentation yet.
2132 :
2133 :			----------------------------------------------------------------------
2134 :			Name: Matthias Blume
2135 :	blume	826	Date: 2001/05/09 16:35:00 EDT
2136 :			Tag: blume-20010509-cpscontract
2137 :			Description:
2138 :
2139 :			Fixed a bug in the accounting code in cpsopt/contract.sml. (The
2140 :			wrapper/unwrapper elimination did not decrement usage counts and some
2141 :			dead variables got overlooked by the dead-up logic.)
2142 :
2143 :			----------------------------------------------------------------------
2144 :	george	824	Name: Lal George
2145 :			Date: 2001/05/08 17:26:09 EDT
2146 :			Tag: george-20010508-omit-frameptr
2147 :			Description:
2148 :
2149 :			Changes to implement the omit-frame-pointer optimization to support
2150 :			raw C calls. For now, there is only support on the Intel x86, but
2151 :			other architectures will follow as more experience is gained with this.
2152 :
2153 :
2154 :			----------------------------------------------------------------------
2155 :	blume	818	Name: Matthias Blume
2156 :	blume	819	Date: 2001/05/07 14:40:00 EDT
2157 :			Tag: blume-20010507-proxies
2158 :			Description:
2159 :
2160 :			I made into "proxy libraries" all libraries that qualify for such a
2161 :			change. (A qualifying library is a library that has another library or
2162 :			groups as its sole member and repeats that member's export list
2163 :			verbatim. A proxy library avoids this repetition by omitting its export
2164 :			list, effectively inheriting the list that its (only) member exports.
2165 :			See the CM manual for more explanation.)
2166 :			The main effect is that explicit export lists for these libraries
2167 :			do not have to be kepts in sync, making maintenance a bit easier.
2168 :
2169 :			I also added copyright notices to many .cm-files.
2170 :
2171 :			Last but not least, I made a new set of bootfiles.
2172 :
2173 :			----------------------------------------------------------------------
2174 :			Name: Matthias Blume
2175 :	blume	818	Date: 2001/05/04 17:00:00 EDT
2176 :			Tag: blume-20010504-cm-lsplit
2177 :			Description:
2178 :
2179 :			0. John merged pending changes to $/smlnj-lib.cm
2180 :
2181 :			1. Allen's previous change accidentally backed out of one of Lal's
2182 :			earlier changes. I undid this mistake (re-introducing Lal's change).
2183 :
2184 :			2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
2185 :			within the compiler where applicable. There is some code simplification
2186 :			because of that.
2187 :
2188 :			3. The "split" phase (in FLINT) is now part of the default list of phases.
2189 :			Compiler.Control.LambdaSplitting.* can be used to globally control the
2190 :			lambda-splitting (cross-module-inlining) engine. In addition to that,
2191 :			it can now also be controlled on a per-source basis: CM has been taught
2192 :			a new tool parameter applicable to ML source files.
2193 :
2194 :			- To turn lambda-splitting off completely:
2195 :			local open Compiler.Control.LambdaSplitting in
2196 :			val _ = set Off
2197 :			end
2198 :			- To make "no lambda-splitting" the global default (but allow per-source
2199 :			overriding); this is the initial setting:
2200 :			local open Compiler.Control.LambdaSplitting in
2201 :			val _ = set (Default NONE)
2202 :			end
2203 :			- To make "lambda-splitting with aggressiveness a" the global default
2204 :			(and allow per-source overriding):
2205 :			local open Compiler.Control.LambdaSplitting in
2206 :			val _ = set (Default (SOME a))
2207 :			end
2208 :
2209 :			- To turn lambda-splitting off for a given ML souce file (say: a.sml)
2210 :			write (in the respective .cm-file):
2211 :			a.sml (lambdasplitting:off)
2212 :			- To turn lambda-splitting for a.sml on with minimal aggressiveness:
2213 :			a.sml (lambdasplitting:on)
2214 :			- To turn lambda-splitting for a.sml on with aggressiveness <a> (where
2215 :			<a> is a decimal non-negative integer):
2216 :			a.sml (lambdasplitting:<a>)
2217 :			- To turn lambda-splitting for a.sml on with maximal aggressiveness:
2218 :			a.sml (lambdasplitting:infinity)
2219 :			- To use the global default for a.sml:
2220 :			a.sml (lambdasplitting:default)
2221 :			or simply
2222 :			a.sml
2223 :
2224 :			----------------------------------------------------------------------
2225 :	leunga	815	Name: Allen Leung
2226 :			Date: 2001/05/04 01:57:00 EDT
2227 :			Tag: leunga-20010504-sync
2228 :			Description:
2229 :	leunga	788
2230 :	leunga	815	MLRISC features.
2231 :
2232 :			1. Fix to CMPXCHG instructions.
2233 :			2. Changed RA interface to allow annotations in callbacks.
2234 :			3. Added a new method to the stream interface to allow annotations updates.
2235 :
2236 :	george	749	----------------------------------------------------------------------
2237 :	blume	812	Name: Matthias Blume
2238 :	blume	814	Date: 2001/05/01 11:45:00 EDT
2239 :			Tag: blume-20010501-pcedittmp
2240 :			Description:
2241 :
2242 :			Changed install.sh to use the current working directory instead of
2243 :			/usr/tmp for a temporary file (pcedittmp). The previous choice
2244 :			of /usr/tmp caused trouble with MacOS X because of file premission
2245 :			problems.
2246 :
2247 :			----------------------------------------------------------------------
2248 :			Name: Matthias Blume
2249 :	blume	812	Date: 2001/04/20 11:10:00 EDT
2250 :			Tag: blume-20010420-inMLflag
2251 :			Description:
2252 :
2253 :			- added vp_limitPtrMask to vproc-state.h
2254 :			(for use by the raw-C-calls mechanism to implement proper interrupt
2255 :			handling)
2256 :			- made the ML compiler aware of various data-structure offsets so it
2257 :			can generate code for accessing the vp_inML flag and vp_limitPtrMask
2258 :			- tweaked mlriscGen.sml to have it emit interrupt-handling code for
2259 :			raw C-calls
2260 :
2261 :			----------------------------------------------------------------------
2262 :	george	810	Name: Lal George
2263 :			Date: 2001/04/20 09:15:28 EDT
2264 :			Tag: george-20010420-macosX
2265 :			Description:
2266 :
2267 :			- Changes to port to Mac OS X; Darwin.
2268 :
2269 :			- In the process I found that sqrt was broken on the PPC, because the
2270 :			fsqrt instruction is not implemented.
2271 :
2272 :			----------------------------------------------------------------------
2273 :	blume	799	Name: Matthias Blume
2274 :	blume	808	Date: 2001/04/18 12:45:00 EDT
2275 :			Tag: blume-20010418-ccalls
2276 :			Description:
2277 :
2278 :			- fixed two off-by-4 errors in the x86-specific c-calls implementation
2279 :			(this bug prevented structure arguments containing pointers from being
2280 :			passed correctly)
2281 :			- changed the raw-C-call code in mlriscGen.sml in such a way that
2282 :			structure arguments are represented as a pointer to the beginning
2283 :			of the structure (instead of having a series of synthesized arguments,
2284 :			one for each structure member)
2285 :
2286 :			- made makeml script's verbosity level configurable via environment
2287 :			variable (MAKEML_VERBOSITY)
2288 :
2289 :	blume	813	- eliminated placeholder implementations for f32l, w16s, i16s, and f32s
2290 :	blume	808	in rawmem-x86.sml; we are now using the real thing
2291 :
2292 :			----------------------------------------------------------------------
2293 :			Name: Matthias Blume
2294 :	blume	806	Date: 2001/03/22 16:25:00 EST
2295 :			Tag: blume-20010322-bootfiles
2296 :			Description:
2297 :
2298 :			Created a new set of bootfiles (for your automatic installation convenience).
2299 :
2300 :			----------------------------------------------------------------------
2301 :			Name: Matthias Blume
2302 :	blume	805	Date: 2001/03/22 15:10:00 EST
2303 :			Tag: blume-20010322-rawmem-parcm
2304 :			Description:
2305 :
2306 :			1. All "raw memory access" primitives for the new FFI are implemented now
2307 :			(at least on the x86).
2308 :			2. Some further cleanup of CM's parallel make mechanism.
2309 :
2310 :			----------------------------------------------------------------------
2311 :			Name: Matthias Blume
2312 :	blume	801	Date: 2001/03/19 17:53:00 EST
2313 :			Tag: blume-20010319-parallel
2314 :			Description:
2315 :
2316 :			Parallel make (using compile servers) now works again.
2317 :
2318 :			To this end, CM.stabilize and CMB.make have been modified to work in
2319 :			two passes when compile servers are attached:
2320 :			1. Compile everything, do not perform stabilization; this pass
2321 :			uses compile servers
2322 :			2. Stabilize everything; this pass does not use compile servers
2323 :			If there are no compile servers, the two passes are combined into one
2324 :			(as before). Splitting the passes increases the inherent parallelism
2325 :			in the dependency graph because the entire graph including all
2326 :			libraries is available at the same time. This, in turn, improves
2327 :			server utilization. The downside is that the master process will
2328 :			have to do some extra work after compilation is done (because for
2329 :			technical reasons it must re-read all the binfiles during stabilization).
2330 :
2331 :			----------------------------------------------------------------------
2332 :			Name: Matthias Blume
2333 :	blume	800	Date: 2001/03/16 12:22:00 EST
2334 :			Tag: blume-20010316-bootfiles
2335 :			Description:
2336 :
2337 :			Created a new set of bootfiles (for your automatic installation convenience).
2338 :
2339 :			----------------------------------------------------------------------
2340 :			Name: Matthias Blume
2341 :	blume	799	Date: 2001/03/16 11:00:00 EST
2342 :			Tag: blume-20010316-MLTREE-fixup
2343 :			Description:
2344 :
2345 :			This is a minor fixup for an (untagged) earlier commit by Allen.
2346 :			(A file was missing).
2347 :
2348 :			----------------------------------------------------------------------
2349 :	leunga	788	Name: Allen Leung
2350 :	leunga	796	Date: Mon Mar 5 18:54:57 EST 2001
2351 :			Tag: leunga-20010305-cut-support
2352 :
2353 :			1. New support for alternative control-flow in MLTREE.
2354 :			Currently we support
2355 :
2356 :			FLOW_TO(CALL ...., [k1,...,kn])
2357 :
2358 :			This is needed for 'cuts to' in C-- and try/handle-like constructs
2359 :			in Moby
2360 :
2361 :			New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
2362 :
2363 :			2. Register Allocator
2364 :
2365 :			Changes in interface [from Fermin, John]
2366 :
2367 :			3. Alpha 8-bit SLL support [Fermin]
2368 :
2369 :			4. All architectures
2370 :
2371 :			A new module (ClusterExpandCopies) for expanding parallel copies.
2372 :
2373 :			----------------------------------------------------------------------
2374 :			Name: Allen Leung
2375 :	leunga	788	Date: 2001/02/27 23:07:00 EST
2376 :			Tag: leunga-20010227-minor-stuff
2377 :
2378 :			1. Alpha bug fix for CMOVNE
2379 :			2. Handle mltree COND(..,FCMP ...,...)
2380 :			3. Bug fix in simplifier
2381 :
2382 :			----------------------------------------------------------------------
2383 :	blume	777	Name: Matthias Blume
2384 :	blume	781	Date: 2001/01/30 17:50:00 EST
2385 :			Tag: blume-20010130-sync
2386 :			Description:
2387 :
2388 :			This is just a minor update to sync my devel branch with the main brach.
2389 :			The only visible change is the addition of some README files.
2390 :
2391 :			----------------------------------------------------------------------
2392 :			Name: Matthias Blume
2393 :	blume	778	Date: 2001/01/12 23:30:00 JST
2394 :			Tag: blume-20010112-bootfiles
2395 :			Description:
2396 :
2397 :			Made a new set of bootfiles that goes with the current state of the
2398 :			repository.
2399 :
2400 :			----------------------------------------------------------------------
2401 :			Name: Matthias Blume
2402 :	blume	777	Date: 2001/01/12 21:20:00 JST
2403 :			Tag: blume-20010112-sync
2404 :			Description:
2405 :
2406 :			I am just flushing out some minor changes that had accumulated in
2407 :			my private branch in order to sync with the main tree. (This is
2408 :			mainly because I had CVS trouble when trying to merge _into_ my
2409 :			private branch.)
2410 :
2411 :			Most people should be completely unaffected by this.
2412 :
2413 :			----------------------------------------------------------------------
2414 :	leunga	775	Name: Allen Leung
2415 :			Date: Thu Jan 11 21:03:00 EST 2001
2416 :			Tag: leunga-20010111-labexp=mltree
2417 :			Description:
2418 :
2419 :			1. Removed the type LabelExp and replace it by MLTree.
2420 :			2. Rewritten mltree-simplify with the pattern matcher tool.
2421 :			3. There were some bugs in alpha code generator which would break
2422 :			64-bit code generation.
2423 :			4. Redo the tools to generate code with the
2424 :			5. The CM files in MLRISC (and in src/system/smlnj/MLRISC)
2425 :			are now generated by perl scripts.
2426 :
2427 :			----------------------------------------------------------------------
2428 :	blume	771	Name: Matthias Blume
2429 :	blume	774	Date: 2001/01/10 21:55:00 JST
2430 :			Tag: blume-20010110-rcc
2431 :			Description:
2432 :
2433 :			The RCC stuff now seems to work (but only on the x86).
2434 :			This required hacking of the c-calls interface (and -implementation) in
2435 :			MLRISC.
2436 :
2437 :			Normal compiler users should be unaffected.
2438 :
2439 :			----------------------------------------------------------------------
2440 :			Name: Matthias Blume
2441 :	blume	773	Date: 2001/01/09 01:20:00 JST
2442 :			Tag: blume-20010109-rcc
2443 :			Description:
2444 :
2445 :			This is a fairly big patch, flushing out a large number of pending
2446 :			changes that I made to my development copy over the last couple of days.
2447 :
2448 :			Of practical relevance at this moment is a workaround for a pickling
2449 :			bug that Allen ran into the other day. The cause of the bug itself is
2450 :			still unknown and it might be hard to fix it properly, but the
2451 :			workaround has some merits of its own (namely somewhat reducing pickling
2452 :			overhead for certain libraries). Therefore, I think this solution should
2453 :			be satisfactory at this time.
2454 :
2455 :			The rest of the changes (i.e., the vast majority) has to do with my
2456 :			ongoing efforts of providing direct support for C function calls from
2457 :			ML. At the moment there is a new primop "RAW_CCALL", typing magic
2458 :			in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
2459 :			case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
2460 :			translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
2461 :			handle RCC.
2462 :
2463 :			The last part (the changes to mlriscGen.sml) are still known to be
2464 :			wrong on the x86 and not implemented on all other architectures. But
2465 :			the infrastructure is in place. I had to change a few functor
2466 :			signatures in the backend to be able to route the CCalls interface
2467 :			from MLRISC there, and I had to specialize the mltree type (on the
2468 :			x86) to include the necessary extensions. (The extensions themselves
2469 :			were already there and redy to go in MLRISC/x86).
2470 :
2471 :			Everything should be very happy as soon as someone helps me with
2472 :			mlriscGen.sml...
2473 :
2474 :			In any case, nothing of this should matter to anyone as long as the
2475 :			new primop is not being used (which is going to be the case unless you
2476 :			find it where I hid it :). The rest of the compiler is completely
2477 :			unaffected.
2478 :
2479 :			----------------------------------------------------------------------
2480 :			Name: Matthias Blume
2481 :	blume	772	Date: 2001/01/05 00:30:00 JST
2482 :			Tag: blume-20010105-primops
2483 :			Description:
2484 :
2485 :			Added some experimental support for work that I am doing right now.
2486 :			These changes mostly concern added primops, but there is also a new
2487 :			experimental C library in the runtime system (but currently not enabled
2488 :			anywhere except on Linux/X86).
2489 :
2490 :			In the course of adding primops (and playing with them), I discovered that
2491 :			Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
2492 :			broken. (Zhong was very right he labeled this stuff as "major gross hack".)
2493 :			To recover, I made type information in INL_PRIM mandatory and changed
2494 :			prim.sml as well as built-in.sml accordingly. The InLine structure now
2495 :			has complete, correct type information (i.e., no bottom types).
2496 :
2497 :			Since all these changes mean that we need new binfiles, I also bumped the
2498 :			version number to 110.32.1.
2499 :
2500 :			----------------------------------------------------------------------
2501 :			Name: Matthias Blume
2502 :	blume	771	Date: 2000/12/30 22:10:00 JST
2503 :			Tag: blume-20001230-various
2504 :			Description:
2505 :
2506 :			Added proxy libraries for MLRISC and let MLRISC libraries refer
2507 :			to each other using path anchors. (See CM manual for explanation.)
2508 :
2509 :			Updated CM documentation.
2510 :
2511 :			Fixed some bugs in CM.
2512 :
2513 :			Implemented "proxy" libraries (= syntactic sugar for CM).
2514 :
2515 :			Added "-quiet" option to makeml and changed runtime system accordingly.
2516 :
2517 :			Added cleanup handler for exportML to reset timers and compiler stats.
2518 :
2519 :			----------------------------------------------------------------------
2520 :	george	761	Name: Lal George
2521 :			Date: 2000/12/22 22:22:58 EST 2000
2522 :			Tag: Release_110_32
2523 :			Description:
2524 :
2525 :			Infinite precision used throughout MLRISC.
2526 :			see MLRISC/mltree/machine-int.sig
2527 :
2528 :			----------------------------------------------------------------------
2529 :	blume	756	Name: Matthias Blume
2530 :	blume	760	Date: 2000/12/22 23:16:00 JST
2531 :			Tag: blume-20001222-warn
2532 :			Description:
2533 :	blume	759
2534 :	blume	760	Corrected wording and formatting of some CM warning message which I
2535 :			broke in my previous patch.
2536 :	blume	759
2537 :			----------------------------------------------------------------------
2538 :			Name: Matthias Blume
2539 :	blume	763	Date: 2000/12/22 21:20:00 JST
2540 :			Tag: blume-20001222-anchorenv
2541 :			Description:
2542 :
2543 :			Fixed CM's handling of anchor environments in connection with CMB.make.
2544 :
2545 :			----------------------------------------------------------------------
2546 :			Name: Matthias Blume
2547 :	blume	758	Date: 2000/12/22 13:15:00 JST
2548 :			Tag: blume-20001222-cleanup
2549 :			Description:
2550 :
2551 :			Removed src/cm/ffi which does not (and did not) belong here.
2552 :
2553 :			----------------------------------------------------------------------
2554 :			Name: Matthias Blume
2555 :	blume	757	Date: 2000/12/21 23:55:00 JST
2556 :			Tag: blume-20001221-exn
2557 :			Description:
2558 :
2559 :			Probably most important: CM no longer silently swallows all exceptions
2560 :			in the compiler.
2561 :			Plus: some other minor CM changes. For example, CM now reports some
2562 :			sizes for generated binfiles (code, data, envpickle, lambdapickle).
2563 :
2564 :			----------------------------------------------------------------------
2565 :			Name: Matthias Blume
2566 :	blume	756	Date: 2000/12/15 00:01:05 JST
2567 :			Tag: blume-20001215-dirtool
2568 :			Description:
2569 :
2570 :			- "dir" tool added.
2571 :			- improvements and cleanup to Tools structure
2572 :			- documentation updates
2573 :
2574 :			----------------------------------------------------------------------
2575 :	leunga	752	Name: Allen Leung
2576 :	leunga	755	Date: Thu Dec 14 03:45:24 EST 2000
2577 :			Description:
2578 :			Tag: leunga-20001214-int-inf
2579 :			Description:
2580 :
2581 :			In IntInf, added these standard functions, which are missing from our
2582 :			implementation:
2583 :
2584 :			andb : int * int -> int
2585 :			xorb : int * int -> int
2586 :			orb : int * int -> int
2587 :			notb : int -> int
2588 :			<< : int * word -> int
2589 :			~>> : int * word -> int
2590 :
2591 :			Not tested, I hope they are correct.
2592 :
2593 :			----------------------------------------------------------------------
2594 :			Name: Allen Leung
2595 :	leunga	752	Date: Fri Dec 8 19:23:26 EST 2000
2596 :			Description:
2597 :			Tag: leunga-20001208-nowhere
2598 :			Description:
2599 :
2600 :			Slight improvements to the 'nowhere' tool to handle OR-patterns,
2601 :			to generate better error messages etc. Plus a brief manual.
2602 :
2603 :			----------------------------------------------------------------------
2604 :	george	749	Name: Lal George
2605 :			Date: 2000/12/08 09:54:02 EST 2000
2606 :			Tag: Release_110_31
2607 :			Description:
2608 :	george	705
2609 :	george	749	- Version 110.31
2610 :	leunga	591	----------------------------------------------------------------------
2611 :	leunga	744	Name: Allen Leung
2612 :			Date: Thu Dec 7 22:01:04 EST 2000
2613 :			Tag: leunga-20001207-cell-monster-hack
2614 :			Description:
2615 :
2616 :			Major MLRISC internal changes. Affect all clients.
2617 :			Summary:
2618 :
2619 :			1. Type CELLS.cell = int is now replaced by a datatype.
2620 :			As a result, the old regmap is now gone. Almost all interfaces
2621 :			in MLRISC change as a consequence.
2622 :
2623 :			2. A new brand version of machine description tool (v3.0) that generates
2624 :			modules expecting the new interface. The old version is removed.
2625 :
2626 :			3. The RA interface has been further abstracted into two new functors.
2627 :			RISC_RA and X86RA. These functors have much simpler interfaces.
2628 :			[See also directory MLRISC/demo.]
2629 :
2630 :			4. Some other new source->source code generation tools are available:
2631 :
2632 :			a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
2633 :			b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
2634 :			I use this tool to generate the peephole optimizers---with the new
2635 :			cell type changes, peephole rules are becoming difficult to write
2636 :			without conditional pattern matching.
2637 :
2638 :			5. More Intmap -> IntHashTable change. Previous changes by Matthias didn't
2639 :			cover the entire MLRISC source tree so many things broke.
2640 :
2641 :			6. CM files have been moved to the subdirectory MLRISC/cm.
2642 :			They are moved because there are a lot of them and they clutter up the
2643 :			root dir.
2644 :
2645 :			7. More detailed documentation to come...
2646 :
2647 :			NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
2648 :			a makeml -rebuild first. This is because of other other
2649 :			changes that Matthias has made (see below).
2650 :
2651 :
2652 :			----------------------------------------------------------------------
2653 :	blume	733	Name: Matthias Blume
2654 :	blume	742	Date: 2000/11/30 23:12:00 JST
2655 :			Tag: blume-20001130-filereorg
2656 :			Description:
2657 :
2658 :			Some manual updates and some file reorganizations in CM.
2659 :
2660 :			----------------------------------------------------------------------
2661 :			Name: Matthias Blume
2662 :	blume	737	Date: 2000/11/24 17:45:00 JST
2663 :			Tag: blume-20001124-link
2664 :			Description:
2665 :
2666 :			Drastically improved link traversal code for the case that the dynamic
2667 :			value was already loaded at bootstrap time. As a result, CM and CMB
2668 :			now both load blazingly fast -- even on a very slow machine. Also,
2669 :			memory consumption has been further reduced by this.
2670 :
2671 :			Warning: The format of the PIDMAP file has changed. THerefore, to
2672 :			bootstrap you have to do this:
2673 :
2674 :			1. Run CMB.make
2675 :			2. Make a symbolic link for the boot directory:
2676 :			ln -s sml.boot.ARCH-OS xxx
2677 :			3. "Rebuild" the boot directory:
2678 :			./makeml -boot xxx -rebuild sml ; rm xxx
2679 :			4. Boot normally:
2680 :			./makeml
2681 :
2682 :			----------------------------------------------------------------------
2683 :			Name: Matthias Blume
2684 :	blume	735	Date: 2000/11/21 21:20:00 JST
2685 :			Tag: blume-20001121-tools
2686 :			Description:
2687 :
2688 :			Continued hacking on autoloading problem -- with success this time.
2689 :			Also changed tool-plugin mechanism. See new CM manual.
2690 :
2691 :			----------------------------------------------------------------------
2692 :			Name: Matthias Blume
2693 :	blume	734	Date: 2000/11/19 14:30:00 JST
2694 :			Tag: blume-20001119-autoload
2695 :			Description:
2696 :
2697 :			Some hacking to make autoloading faster. Success for CMB, no success
2698 :			so far for CM. There is a reduced structure CM' that autoloads faster.
2699 :			(This is a temporary, non-documented hack to be eliminated again when
2700 :			the general problem is solved.)
2701 :
2702 :			----------------------------------------------------------------------
2703 :			Name: Matthias Blume
2704 :	blume	733	Date: 2000/11/17 14:10:00 JST
2705 :			Tag: blume-20001117-pickle-lib
2706 :			Description:
2707 :
2708 :			1. Eliminated comp-lib.cm
2709 :			2. Made pickle-lib.cm
2710 :			3. Eliminated all uses of intset.sml (from comp-lib.cm)
2711 :			4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
2712 :			equivalent constructs from smlnj-lib.cm (INtHashTable).
2713 :			5. Point 4. also goes for those uses of intmap.* in MLRISC.
2714 :			Duplicated intmap modules thrown out.
2715 :			6. Hunted down all duplicated SCC code and replaced it with
2716 :			equivalent stuff (GraphSCCFn from smlnj-lib.cm).
2717 :			7. Rewrote Feedback module.
2718 :			8. Moved sortedlist.sml into viscomp-lib.cm. Eventually it
2719 :			should be thrown out and equivalent modules from smlnj-lib.cm
2720 :			should be used (IntRedBlackSet, IntListSet, ...).
2721 :
2722 :			Confirmed that compiler compiles to fixpoint.
2723 :
2724 :			----------------------------------------------------------------------
2725 :	leunga	731	Name: Allen Leung
2726 :			Date: 2000/11/10 18:00:00
2727 :			Tag: leunga-20001110-new-x86-fp
2728 :
2729 :			A new x86 floating point code generator has been added.
2730 :			By default this is turned off. To turn this on, do:
2731 :
2732 :			CM.autoload "$smlnj/compiler.cm";
2733 :			Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
2734 :
2735 :			Changes:
2736 :
2737 :			1. Changed FTAN to FPTAN so that the assembly output is correct.
2738 :			2. Changed the extension callback for FTANGENT to generate:
2739 :
2740 :			fptan
2741 :			fstp %st(0)
2742 :			instead of
2743 :			fptan
2744 :			fstpl ftempmem
2745 :
2746 :			3. Numerous assembly fixes for x86.
2747 :
2748 :			5. Cleaned up the machine code output module x86/x86MC.sml and added
2749 :			support for a whole bunch of instructions and addressing modes:
2750 :
2751 :			fadd/fsub/fsubr/fmul/fdiv/fdivr %st, %st(n)
2752 :			faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp %st, %st(n)
2753 :			fadd/fsub/fsubr/fmul/fdiv/fdivr %st(n), %st
2754 :			fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
2755 :			fxch %st(n)
2756 :			fld %st(n)
2757 :			fst %st(n)
2758 :			fst mem
2759 :			fstp %st(n)
2760 :			fucom %st(n)
2761 :			fucomp %st(n)
2762 :
2763 :			All these are now generated when the fast fp mode is turned on.
2764 :
2765 :			6. Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
2766 :
2767 :			----------------------------------------------------------------------
2768 :	blume	729	Name: Matthias Blume
2769 :			Date: 2000/11/09 11:20:00 JST
2770 :			Tag: blume-20001109-scc
2771 :			Description:
2772 :
2773 :			Eliminated some code duplication:
2774 :
2775 :			1. Added "where" clause to GraphSCCFn in SML/NJ Library.
2776 :			(Otherwise the functor is useless.)
2777 :			2. Used GraphSCCFn where SCCUtilFun was used previously.
2778 :			3. Got rid of SCCUtilFun (in comp-lib.cm).
2779 :
2780 :			----------------------------------------------------------------------
2781 :	george	721	Name: Lal George
2782 :			Date: 2000/11/06 09:02:21 EST 2000
2783 :			Tag: Release_110_30
2784 :			Description:
2785 :
2786 :			- Version 110.30
2787 :			----------------------------------------------------------------------
2788 :	blume	715	Name: Matthias Blume
2789 :	blume	716	Date: 2000/11/04 14:45:00
2790 :			Tag: blume-20001104-mlbuild
2791 :			Description:
2792 :
2793 :			- Made ml-build faster on startup.
2794 :			- Documentation fixes.
2795 :
2796 :			----------------------------------------------------------------------
2797 :			Name: Matthias Blume
2798 :	blume	715	Date: 2000/11/02 17:00:00 JST
2799 :			Tag: blume-20001102-condcomp
2800 :			Description:
2801 :
2802 :			- Small tweaks to pickler -- new BOOTFILES!
2803 :			- Version bumped to 110.29.2.
2804 :			- Added conditional compilation facility to init.cmi (see comment there).
2805 :			----------------------------------------------------------------------
2806 :	leunga	713	Name: Allen Leung
2807 :			Date: 2000/10/23 19:31:00
2808 :			Tag: leunga-20001023-demo-ra
2809 :
2810 :			1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
2811 :			2. Test programs for the graph library updated
2812 :			3. Some new MLRISC demo programs added
2813 :
2814 :			----------------------------------------------------------------------
2815 :	blume	710	Name: Matthias Blume
2816 :	blume	711	Date: 2000/08/31 22:15:00 JST
2817 :			Tag: blume-20001017-errmsg
2818 :			Description:
2819 :
2820 :			More error message grief: Where there used to be no messages, there
2821 :			now were some that had bogus error regions. Fixed.
2822 :
2823 :			----------------------------------------------------------------------
2824 :			Name: Matthias Blume
2825 :	blume	710	Date: 2000/08/31 17:30:00 JST
2826 :			Tag: blume-20001017-v110p29p1
2827 :			Description:
2828 :
2829 :			I made a version 110.29.1 with new bootfiles.
2830 :
2831 :			Changes: Modified pickler/unpickler for faster and leaner unpickling.
2832 :			CM documentation changes and a small bugfix in CM's error reporting.
2833 :
2834 :			----------------------------------------------------------------------
2835 :	george	705	Name: Lal George
2836 :			Date: 2000/09/27 14:42:35 EDT
2837 :			Tag: george-20000927-nodestatus
2838 :			Description:
2839 :
2840 :			Changed the type of the nodestatus, so that:
2841 :
2842 :			SPILLED(~1) is now SPILLED
2843 :			SPILLED(m) where m>=0 is now MEMREG(m)
2844 :			SPILLED(s) where s<~1 is now SPILL_LOC(~s)
2845 :
2846 :			----------------------------------------------------------------------
2847 :	blume	697	Name: Matthias Blume
2848 :	blume	703	Date: 2000/09/07 14:45:00 JST
2849 :			Tag: blume-20000907-cmerrmsg
2850 :			Description:
2851 :
2852 :			Small tweak to CM to avoid getting ML syntax error messages twice.
2853 :
2854 :			----------------------------------------------------------------------
2855 :			Name: Matthias Blume
2856 :	blume	701	Date: 2000/08/31 18:00:00 JST
2857 :			Tag: blume-20000831-cvsbootfiles
2858 :			Description:
2859 :
2860 :			New URL for boot files (because the 110.29 files on the BL server do
2861 :			now work correctly with my updated install scripts for yacc and lex).
2862 :
2863 :			----------------------------------------------------------------------
2864 :			Name: Matthias Blume
2865 :	blume	697	Date: 2000/08/08 12:33:00 JST
2866 :			Tag: blume-20000808-manual
2867 :			Description:
2868 :
2869 :			Tiny update to CM manual.
2870 :
2871 :			----------------------------------------------------------------------
2872 :	leunga	695	Name: Allen Leung
2873 :			Date: 2000/08/7 19:31:00
2874 :			Tag: leunga-20000807-a-whole-bunch-of-stuff
2875 :
2876 :			Moby, C--, SSA, x86, machine descriptions etc. Should only affect C--
2877 :			and Mobdy.
2878 :
2879 :			1. x86
2880 :
2881 :			a. Fixes to peephole module by John and Dan.
2882 :			b. Assembly fix to SETcc by Allen.
2883 :			c. Fix to c-call by John.
2884 :			d. Fix to spilling by John. (This one deals with the missing FSTPT case)
2885 :			e. Instruction selection optimization to SETcc as suggested by John.
2886 :
2887 :			For example,
2888 :
2889 :			MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
2890 :
2891 :			should generate:
2892 :
2893 :			MOVL a, x
2894 :			SUBL b, x
2895 :			SHRL 31, x
2896 :
2897 :			2. IR stuff
2898 :
2899 :			A bunch of new DJ-graph related algorithms added. These
2900 :			speed up SSA construction.
2901 :
2902 :			3. SSA + Scheduling
2903 :
2904 :			Added code for SSA and scheduling to the repository
2905 :
2906 :			----------------------------------------------------------------------
2907 :	george	694	Name: Lal George
2908 :			Date: 2000/07/27 11:53:14 EDT
2909 :
2910 :			Tag: lal-20000727-linux-ppc
2911 :			Description:
2912 :
2913 :			Made changes to support Linux PPC.
2914 :			p.s. I have confirmation that the 110.29 boot files work fine.
2915 :
2916 :			----------------------------------------------------------------------
2917 :	blume	684	Name: Matthias Blume
2918 :	blume	692	Date: 2000/07/27 17:40:00 JST
2919 :			Tag: blume-20000727-scripts
2920 :			Description:
2921 :
2922 :			!!!! WARNING !!!!
2923 :			You must recompile the runtime system!
2924 :			!!!! WARNING !!!!
2925 :
2926 :			This is basically another round of script-enhancements:
2927 :
2928 :			1. sml, ml-build, and ml-makedepend accept options -D and -U to define
2929 :			and undefine CM preprocessor symbols.
2930 :
2931 :			2. ml-build avoids generating a new heap image if it finds that the
2932 :			existing one is still ok. (The condition is that no ML file had to
2933 :			be recompiled and all ML files are found to be older that the heap
2934 :			file.)
2935 :
2936 :			To make this work smoothly, I also hacked the runtime system as
2937 :			well as SMLofNJ.SysInfo to get access to the heap image suffix
2938 :			(.sparc-solaris, ...) that is currently being used.
2939 :
2940 :			Moreover, the signature of CM.mk_standalone has changed. See the
2941 :			CM manual.
2942 :
2943 :			3. ml-makedepend accepts additional options -n, -a, and -o. (See the
2944 :			CM manual for details.)
2945 :
2946 :			4. More CM manual updates:
2947 :			- all of the above has been documented.
2948 :			- there is now a section describing the (CM-related) command line
2949 :			arguments that are accepted by the "sml" command
2950 :
2951 :			----------------------------------------------------------------------
2952 :			Name: Matthias Blume
2953 :	blume	691	Date: 2000/07/25 16:20:00 JST
2954 :			Tag: blume-20000725-makedepend
2955 :			Description:
2956 :
2957 :			Added a script called ml-makedepend. This can be used in makefiles
2958 :			for Unix' make in a way very similar to the "makedepend" command for
2959 :			C.
2960 :
2961 :			The script internally uses function CM.sources.
2962 :
2963 :			Synopsis:
2964 :
2965 :			ml-makedepend [-f makefile] cmfile targetname
2966 :
2967 :			The default for the makefile is "makefile" (or "Makefile" should
2968 :			"makefile" not exist).
2969 :
2970 :			ml-makedepend adds a cmfile/targetname-specific section to this
2971 :			makefile (after removing the previous version of this section). The
2972 :			section contains a single dependency specification with targetname on
2973 :			the LHS (targetname is an arbitrary name), and a list of files derived
2974 :			from the cmfile on the RHS. Some of the files on the RHS are
2975 :			ARCH/OPSYS-specific. Therefore, ml-makedepend inserts references to
2976 :			"make" variables $(ARCH) and $(OPSYS) in place of the corresponding
2977 :			path names. The makefile writer is responsible for making sure that
2978 :			these variables have correct at the time "make" is invoked.
2979 :
2980 :			----------------------------------------------------------------------
2981 :			Name: Matthias Blume
2982 :	blume	690	Date: 2000/07/22 23:30:00 JST
2983 :			Tag: blume-20000722-urlupdate
2984 :			Description:
2985 :
2986 :			Changed BOOT and config/srcarchiveurl to point to BL server:
2987 :
2988 :			ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
2989 :
2990 :			----------------------------------------------------------------------
2991 :			Name: Matthias Blume
2992 :	blume	686	Date: 2000/07/18 18:00:00 JST
2993 :			Tag: blume-20000718-Version_110_29
2994 :			Description:
2995 :
2996 :			1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
2997 :
2998 :			2. Updated config/version to 110.29
2999 :
3000 :			3. Updated config/srcarchiveurl
3001 :
3002 :			3. New boot files!
3003 :			ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
3004 :
3005 :			----------------------------------------------------------------------
3006 :			Name: Matthias Blume
3007 :	blume	684	Date: 2000/07/11 13:58:00 JST
3008 :			Tag: blume-20000711-doctypo
3009 :			Description:
3010 :
3011 :			Fixed a few typos in CM manual.
3012 :
3013 :			----------------------------------------------------------------------
3014 :	leunga	683	Name: Allen Leung
3015 :			Date: 2000/06/15 00:38:00
3016 :			Tag: leunga-20000704-sparc-x86
3017 :
3018 :			1. x86 peephole improvement sp += k; sp -= k => nop [from John]
3019 :			2. fix to x86 RET bug [found by Dan Grossman]
3020 :			3. sparc assembly bug fix for ticc instructions [found by Fermin]
3021 :
3022 :			Affects c-- and moby only
3023 :
3024 :			----------------------------------------------------------------------
3025 :	blume	680	Name: Matthias Blume
3026 :	blume	682	Date: 2000/07/04 15:26:00
3027 :			Tag: blume-20000704-trigger
3028 :			Description:
3029 :
3030 :			1. Improvements to CM manual.
3031 :			2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
3032 :			of getting a back-trace. The function, when called, raises an
3033 :			internal exception which explicitly carries the full back-trace history,
3034 :			so it is unaffected by any intervening handle-raise pairs ("trivial"
3035 :			or not). The interactive loop will print that history once it arrives
3036 :			at top level.
3037 :			Short of having all exceptions implicitly carry the full history, the
3038 :			recommended way of using this facility is:
3039 :			- compile your program with instrumentation "on"
3040 :			- run it, when it raises an exception, look at the history
3041 :			- if the history is "cut off" because of some handler, go and modify
3042 :			your program so that it explicitly calls BTrace.trigger
3043 :			- recompile (still instrumented), and rerun; look at the full history
3044 :
3045 :			----------------------------------------------------------------------
3046 :			Name: Matthias Blume
3047 :			Date: 2000/07/03 15:36:00 JST
3048 :	blume	680	Tag: blume-20000702-manual
3049 :			Description:
3050 :
3051 :			Small corrections and updates to CM manual.
3052 :
3053 :			----------------------------------------------------------------------
3054 :	blume	682	Name: Matthias Blume
3055 :	blume	679	Date: 2000/06/29 16:04:00 JST
3056 :			Tag: blume-20000629-yacctool
3057 :			Description:
3058 :
3059 :			Changes:
3060 :
3061 :			1. Class "mlyacc" now takes separate arguments to pass options to
3062 :			generated .sml- and .sig-files independently.
3063 :			2. Corresponding CM manual updates.
3064 :			3. BTrace module now also reports call sites. (However, for loop clusters
3065 :			it only shows from where the cluster was entered.) There are associated
3066 :			modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
3067 :
3068 :			----------------------------------------------------------------------
3069 :	blume	675	Name: Matthias Blume
3070 :	blume	678	Date: 2000/06/27 16:51:00 JST
3071 :			Tag: blume-20000627-noweb
3072 :			Description:
3073 :
3074 :			Changes:
3075 :
3076 :			1. Implemented "subdir" and "witness" options for noweb tool.
3077 :			This caused some slight internal changes in CM's tool implementation.
3078 :			2. Fixed bug in "tool plugin" mechanism. This is essentially cleaning
3079 :			some remaining issues from earlier path anchor changes.
3080 :			3. Updated CM manual accordingly.
3081 :
3082 :			4. Changed implementation of back-tracing so that I now consider it
3083 :			ready for prime-time.
3084 :
3085 :			In particular, you don't have to explicitly trigger the back-trace
3086 :			anymore. Instead, if you are running BTrace-instrumented code and
3087 :			there is an uncaught exception (regardless of whether or not it was
3088 :			raised in instrumented code), the top-level evalloop will print
3089 :			the back-trace.
3090 :
3091 :			Features:
3092 :
3093 :			- Instrumented and uninstrumented code work together seemlessly.
3094 :			(Of course, uninstrumented code is never mentioned in actual
3095 :			back-traces.)
3096 :
3097 :			- Asymptotic time- and space-complexity of instrumented code is
3098 :			equal to that of uninstrumented code. (This means that
3099 :			tail-recursion is preserved by the instrumentation phase.)
3100 :
3101 :			- Modules whose code has been instrumented in different sessions
3102 :			work together without problem.
3103 :
3104 :			- There is no penalty whatsoever on uninstrumented code.
3105 :
3106 :			- There is no penalty on "raise" expressions, even in
3107 :			instrumented code.
3108 :
3109 :			A potential bug (or perhaps it is a feature, too):
3110 :
3111 :			A back-trace reaches no further than the outermost instrumented
3112 :			non-trivial "raise". Here, a "trivial" raise is one that is the
3113 :			sole RHS of a "handle" rule. Thus, back-traces reach trough
3114 :
3115 :			<exp> handle e => raise e
3116 :
3117 :			and even
3118 :
3119 :			<exp> handle Foo => raise Bar
3120 :
3121 :			and, of course, through
3122 :
3123 :			<exp> handle Foo => ...
3124 :
3125 :			if the exception was not Foo.
3126 :
3127 :			Back-traces always reach right through any un-instrumented code
3128 :			including any of its "handle" expressions, trivial or not.
3129 :
3130 :			To try this out, do the following:
3131 :
3132 :			- Erase all existing binfiles for your program.
3133 :			(You may keep binfiles for those modules where you think you
3134 :			definitely don't need back-tracing.)
3135 :			- Turn on back-trace instrumentation:
3136 :			SMLofNJ.Internals.BTrace.mode (SOME true);
3137 :			- Recompile your program. (I.e., run "CM.make" or "use".)
3138 :			- You may now turn instrumentation off again (if you want):
3139 :			SMLofNJ.Internals.BTrace.mode (SOME false);
3140 :			- Run your program as usual. If it raises an exception that
3141 :			reaches the interactive toplevel, then a back-trace will
3142 :			automatically be printed. After that, the toplevel loop
3143 :			will print the exception history as usual.
3144 :
3145 :			----------------------------------------------------------------------
3146 :			Name: Matthias Blume
3147 :	blume	677	Date: 2000/06/26 09:56:46 JST
3148 :			Tag: blume-20000626-setup
3149 :			Description:
3150 :
3151 :			CM: - setup-parameter to "sml" added; this can be used to run arbitrary
3152 :			ML code before and after compiling a file (e.g., to set compiler
3153 :			flags)
3154 :
3155 :			Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
3156 :			- associated changes to btrace.sml (BTrace instrumentation pass)
3157 :			- cleaner implementation of btimp.sml (BTrace tracing and report
3158 :			module)
3159 :
3160 :			CM manual: * new path encoding documented
3161 :			* description of setup-parameter to "sml" added
3162 :
3163 :			The biggest user-visible change to back-tracing is that it is no
3164 :			longer necessary to compile all traced modules within the same
3165 :			session. (This was a real limitation.)
3166 :
3167 :			----------------------------------------------------------------------
3168 :			Name: Matthias Blume
3169 :	blume	676	Date: 2000/06/24 12:40:00 JST
3170 :			Tag: blume-20000624-startup
3171 :			Description:
3172 :
3173 :			Fixes startup slowdown problem. (I was calling SrcPath.sync a _tad_
3174 :			bit too often -- to put it mildly. :)
3175 :
3176 :			----------------------------------------------------------------------
3177 :			Name: Matthias Blume
3178 :	blume	675	Date: 2000/06/23 18:20:00 JST
3179 :			Tag: blume-20000623-btrace
3180 :			Description:
3181 :
3182 :			This updates adds a backtrace facility to aid programmers in debugging
3183 :			their programs. This involves the following changes:
3184 :
3185 :			1. Module system/smlnj/init/core.sml (structure _Core) now has hooks for
3186 :			keeping track of the current call stack. When programs are compiled
3187 :			in a special mode, the compiler will insert calls to these hooks
3188 :			into the user program.
3189 :			"Hook" means that it is possible for different implementations of
3190 :			back-tracing to register themselves (at different times).
3191 :
3192 :			2. compiler/MiscUtil/profile/btrace.sml implements the annotation phase
3193 :			as an Absyn.dec->Absyn.dec rewrite. Normally this phase is turned off.
3194 :			It can be turned on using this call:
3195 :			SMLofNJ.Internals.BTrace.mode (SOME true);
3196 :			Turning it off again:
3197 :			SMLofNJ.Internals.BTrace.mode (SOME false);
3198 :			Querying the current status:
3199 :			SMLofNJ.Internals.BTrace.mode NONE;
3200 :			Annotated programs are about twice as big as normal ones, and they
3201 :			run a factor of 2 to 4 slower with a dummy back-trace plugin (one
3202 :			where all hooks do nothing). The slowdown with a plugin that is
3203 :			actually useful (such as the one supplied by default) is even greater,
3204 :			but in the case of the default plugin it is still only an constant
3205 :			factor (amortized).
3206 :
3207 :			3. system/Basis/Implementation/NJ/internals.{sig,sml} have been augmented
3208 :			with a sub-structure BTrace for controlling back-tracing. In particular,
3209 :			the above-mentioned function "mode" controls whether the annotation
3210 :			phase is invoked by the compiler. Another important function is
3211 :			"trigger": when called it aborts the current execution and causes
3212 :			the top-level loop to print a full back-trace.
3213 :
3214 :			4. compiler/MiscUtil/profile/btimp.sml is the current default plugin
3215 :			for back-tracing. It keeps track of the dynamic call stack and in
3216 :			addition to that it keeps a partial history at each "level" of that
3217 :			stack. For example, if a tail-calls b, b tail-calls c, and c tail-calls
3218 :			d and b (at separate times, dynamically), then the report will show:
3219 :
3220 :			GOTO d
3221 :			/c
3222 :			GOTO \b
3223 :			CALL a
3224 :
3225 :			This shows that there was an initial non-tail call of a, then a
3226 :			tail-call to b or c, looping behavior in a cluster of functions that
3227 :			consist of b and c, and then a goto from that cluster (i.e., either from
3228 :			b or from c) to d.
3229 :
3230 :			Note that (depending on the user program) the amount of information
3231 :			that the back-trace module has to keep track of at each level is bounded
3232 :			by a constant. Thus, the whole implementation has the same asymptotical
3233 :			complexity as the original program (both in space and in time).
3234 :
3235 :			5. compiler/TopLevel/interact/evalloop.sml has been modified to
3236 :			handle the special exception SMLofNJ.Internals.BTrace.BTrace
3237 :			which is raised by the "trigger" function mentioned above.
3238 :
3239 :			Notes on usage:
3240 :
3241 :			- Annotated code works well together with unannotated code:
3242 :			Unannotated calls simply do not show up at all in the backtrace.
3243 :
3244 :			- It is not a good idea to let modules that were annotated during
3245 :			different sessions run at the same time. This is because the compiler
3246 :			chooses small integers to identify individual functions, and there
3247 :			will be clashes if different modules were compiled in separate sessions.
3248 :			(Nothing will crash, and you will even be told about the clashes, but
3249 :			back-trace information will in general not be useful.)
3250 :
3251 :			- Back-tracing can be confused by callcc and capture.
3252 :
3253 :			- The only way of getting a back-trace right now is to explicitly
3254 :			invoke the "trigger" function from your user program. Eventually, we
3255 :			should make every exception carry back-trace information (if
3256 :			available). But since this creates more overhead at "raise"-time
3257 :			(similar to the current exnHistory overhead), I have not yet
3258 :			implemented this. (The implementation will be rather easy.) With
3259 :			exceptions carrying back-trace information, this facility will be even
3260 :			more useful because users don't need to modify their programs...
3261 :
3262 :			- While it is possible to compile the compiler with back-trace
3263 :			annotations turned on (I did it to get some confidence in
3264 :			correctness), you must make absolutely sure that core.sml and
3265 :			btimp.sml are compiled WITHOUT annotation! (core.sml cannot actually
3266 :			be compiled with annotation because there is no core access yet, but
3267 :			if you compile btimp.sml with annotation, then the system will go into
3268 :			an infinite recursion and crash.)
3269 :			Since CM currently does not know about BTrace, the only way to turn
3270 :			annotations on and off for different modules of the compiler is to
3271 :			interrupt CMB.make, change the settings, and re-invoke it. Of course,
3272 :			this is awkward and clumsy.
3273 :
3274 :			Sample sessions:
3275 :
3276 :			Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
3277 :			- SMLofNJ.Internals.BTrace.mode (SOME true);
3278 :			[autoloading]
3279 :			[autoloading done]
3280 :			val it = false : bool
3281 :			- structure X = struct
3282 :			- fun main n = let
3283 :			- fun a (x, 0) = d x
3284 :			- | a (x, n) = b (x, n - 1)
3285 :			- and b (x, n) = c (x, n)
3286 :			- and c (x, n) = a (x, n)
3287 :			- and d x = e (x, 3)
3288 :			- and e (x, 0) = f x
3289 :			- | e (x, n) = e (x, n - 1)
3290 :			- and f 0 = SMLofNJ.Internals.BTrace.trigger ()
3291 :			- | f n = n * g (n - 1)
3292 :			- and g n = a (n, 3)
3293 :			- in
3294 :			- f n
3295 :			- end
3296 :			- end;
3297 :			structure X : sig val main : int -> int end
3298 :			- X.main 3;
3299 :			*** BACK-TRACE ***
3300 :			GOTO stdIn:4.2-13.20: X.main[2].f
3301 :			GOTO-( stdIn:4.2-13.20: X.main[2].e
3302 :			GOTO stdIn:4.2-13.20: X.main[2].d
3303 :			/ stdIn:4.2-13.20: X.main[2].a
3304 :			| stdIn:4.2-13.20: X.main[2].b
3305 :			GOTO-\ stdIn:4.2-13.20: X.main[2].c
3306 :			CALL stdIn:4.2-13.20: X.main[2].g
3307 :			GOTO stdIn:4.2-13.20: X.main[2].f
3308 :			GOTO-( stdIn:4.2-13.20: X.main[2].e
3309 :			GOTO stdIn:4.2-13.20: X.main[2].d
3310 :			/ stdIn:4.2-13.20: X.main[2].a
3311 :			| stdIn:4.2-13.20: X.main[2].b
3312 :			GOTO-\ stdIn:4.2-13.20: X.main[2].c
3313 :			CALL stdIn:4.2-13.20: X.main[2].g
3314 :			GOTO stdIn:4.2-13.20: X.main[2].f
3315 :			GOTO-( stdIn:4.2-13.20: X.main[2].e
3316 :			GOTO stdIn:4.2-13.20: X.main[2].d
3317 :			/ stdIn:4.2-13.20: X.main[2].a
3318 :			| stdIn:4.2-13.20: X.main[2].b
3319 :			GOTO-\ stdIn:4.2-13.20: X.main[2].c
3320 :			CALL stdIn:4.2-13.20: X.main[2].g
3321 :			GOTO stdIn:4.2-13.20: X.main[2].f
3322 :			CALL stdIn:2.15-17.4: X.main[2]
3323 :			-
3324 :
3325 :			(Note that because of a FLINt bug the above code currently does not
3326 :			compile without BTrace turned on.)
3327 :
3328 :			Here is another example, using my modified Tiger compiler:
3329 :
3330 :			Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
3331 :			- SMLofNJ.Internals.BTrace.mode (SOME true);
3332 :			[autoloading]
3333 :			[autoloading done]
3334 :			val it = false : bool
3335 :			- CM.make "sources.cm";
3336 :			[autoloading]
3337 :			...
3338 :			[autoloading done]
3339 :			[scanning sources.cm]
3340 :			[parsing (sources.cm):parse.sml]
3341 :			[creating directory CM/SKEL ...]
3342 :			[parsing (sources.cm):tiger.lex.sml]
3343 :			...
3344 :			[wrote CM/sparc-unix/semant.sml]
3345 :			[compiling (sources.cm):main.sml]
3346 :			[wrote CM/sparc-unix/main.sml]
3347 :			[New bindings added.]
3348 :			val it = true : bool
3349 :			- Main.compile ("../testcases/merge.tig", "foo.out");
3350 :			*** BACK-TRACE ***
3351 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trvar
3352 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
3353 :			CALL lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
3354 :			GOTO lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
3355 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
3356 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
3357 :			CALL lib/semant.sml:488.3-505.6: SemantFun[2].transDec.trdec[2].transBody[2]
3358 :			/ lib/semant.sml:411.65-543.8: SemantFun[2].transDec
3359 :			CALL-\ lib/semant.sml:413.2-540.9: SemantFun[2].transDec.trdec[2]
3360 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
3361 :			CALL lib/semant.sml:8.52-558.4: SemantFun[2].transProg[2]
3362 :			CALL main.sml:1.18-118.4: Main.compile[2]
3363 :			-
3364 :
3365 :			----------------------------------------------------------------------
3366 :	blume	673	Name: Matthias Blumen
3367 :			Date: 2000/06/21 18:00:00 JST
3368 :			Tag: blume-20000621-manual
3369 :			Description:
3370 :
3371 :			CM manual update: Path environments documented.
3372 :
3373 :			----------------------------------------------------------------------
3374 :	blume	666	Name: Matthias Blume
3375 :	blume	672	Date: 2000/06/19 13:40:00
3376 :			Tag: blume-20000619-manual
3377 :			Description:
3378 :
3379 :			CM manual and system/README update. This only covers the fact that
3380 :			there are no more implicit anchors. (Path environments and the "bind"
3381 :			option to "cm" have yet to be documented.)
3382 :
3383 :			----------------------------------------------------------------------
3384 :			Name: Matthias Blume
3385 :	blume	671	Date: 2000/06/19 11:05:00 JST
3386 :			Tag: blume-20000619-chdir-bugfix
3387 :			Description:
3388 :
3389 :			Fixed a bug in new SrcPath module that sometimes led to a bad chDir call.
3390 :
3391 :			----------------------------------------------------------------------
3392 :			Name: Matthias Blume
3393 :	blume	670	Date: 2000/06/18 22:00:10 JST
3394 :			Tag: blume-20000618-implicit-anchors-really-gone
3395 :			Description:
3396 :
3397 :			I updates the previous HISTORY entry where I forgot to mention that
3398 :			implicit anchors are no longer with us.
3399 :
3400 :			The current update also gets rid of the (now useless) controller
3401 :			CM.Control.implicit_anchors.
3402 :
3403 :			----------------------------------------------------------------------
3404 :			Name: Matthias Blume
3405 :	blume	666	Date: 2000/06/16 17:30:00 JST
3406 :			Tag: blume-20000616-anchorenv
3407 :			Description:
3408 :
3409 :			This patch implements the long anticipated (just kidding :) "anchor
3410 :			environment" mechanism. In the course of doing this, I also
3411 :			re-implemented CM's internal "SrcPath" module from scratch. The new
3412 :			one should be more robust in certain boundary cases. In any case, it
3413 :			is a lot cleaner than its predecessor (IMHO).
3414 :
3415 :			This time, although there is yet another boot file format change, I
3416 :			kept the unpickler backward-compatible. As a result, no new bootfiles
3417 :			are necessary and bootstrapping is straightforward. (You cannot read
3418 :			new bootfiles into an old system, but the other way around is no
3419 :			problem.)
3420 :
3421 :			Visible changes:
3422 :
3423 :	blume	670	** 0. Implicit path anchors (without the leading $-symbol) are no
3424 :			longer recognized at all. This means that such path names are not
3425 :			illegal either. For example, the name basis.cm simply refers to a
3426 :			local file called "basis.cm" (i.e, the name is an ordinary path
3427 :			relative to .cm-files directory). Or, to put it differently, only
3428 :			names that start with $ are anchored paths.
3429 :	blume	666
3430 :	blume	670	** 1. The $<singlearc> abbreviation for $/<singlearc> has finally
3431 :			vanished.
3432 :
3433 :			John (Reppy) had critizised this as soon as I originally proposed and
3434 :	blume	666	implemented it, but at that time I did not really deeply believe
3435 :			him. :) Now I came full-circle because I need the $<singlearc> syntax
3436 :			in another place where it cannot be seen as an abbreviation for
3437 :			$/<singlearc>. To avoid the confusion, $<singlearc> now means what it
3438 :			seems to mean (i.e., it "expands" into the corresponding anchor
3439 :			value).
3440 :
3441 :			However, when paths are used as members in CM description files, it
3442 :			continues to be true that there must be at least another arc after the
3443 :			anchor. This is now enforced separately during semantic analysis
3444 :	blume	670	(i.e., from a lexical/syntactical point of view, the notation is ok.)
3445 :	blume	666
3446 :			** 2. The "cm" class now accepts an option "bind". The option's value
3447 :			is a sub-option list of precisely two items -- one labeled "anchor"
3448 :			and the other one labeled "value". As you might expect, "anchor" is
3449 :			used to specify an anchor name to be bound, and "value" specifies what
3450 :			the anchor is being bound to.
3451 :
3452 :			The value must be a directory name and can be given in either standard
3453 :			syntax (including the possibility that it is itself an anchored path)
3454 :			or native syntax.
3455 :
3456 :			Examples:
3457 :
3458 :			foo.cm (bind:(anchor:bar value:$mystuff/bar))
3459 :			lib.cm (bind:(anchor:a value:"H:\\x\\y\\z")) (* only works under windows *)
3460 :
3461 :			and so on.
3462 :
3463 :			The meaning of this is that the .cm-file will be processed with an
3464 :			augmented anchor environment where the given anchor(s) is/are bound to
3465 :			the given values(s).
3466 :
3467 :			The rationale for having this feature is this: Suppose you are trying
3468 :			to use two different (already stable) libraries a.cm and b.cm (that
3469 :			you perhaps didn't write yourself). Further, suppose each of these
3470 :			two libraries internally uses its own auxiliary library $aux/lib.cm.
3471 :			Normally you would now have a problem because the anchor "lib" can not
3472 :			be bound to more than one value globally. Therefore, the project that
3473 :			uses both a.cm and b.cm must locally redirect the anchor to some other
3474 :			place:
3475 :
3476 :			a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
3477 :			b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
3478 :
3479 :			This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
3480 :			/usr/lib/smlnj/b-stuff/aux.cm, respectively.
3481 :
3482 :			Hard-wiring path names is a bit inflexible (and CM will verbosely warn
3483 :			you when you do so at the time of CM.stabilize). Therefore, you can
3484 :			also use an anchored path as the value:
3485 :
3486 :			a.cm (bind:(anchor:lib value:$a-lib))
3487 :			b.cm (bind:(anchor:lib value:$b-lib))
3488 :
3489 :			Now you can globally configure (using the usual CM.Anchor.anchor or
3490 :			pathconfig machinery) bindings for "a-lib" and "b-lib". Since "lib"
3491 :			itself is always locally bound, setting it globally is no longer
3492 :			meaningful or necessary (but it does not hurt either). In fact, "lib"
3493 :			can still be used as a global anchor for separate purposes. As a
3494 :			matter of fact, one can locally define "lib" in terms of a global
3495 :			"lib":
3496 :
3497 :			a.cm (bind:(anchor:lib value:$lib/a))
3498 :			b.cm (bind:(anchor:lib value:$lib/b))
3499 :
3500 :			** 3: The encoding of path names has changed. This affects the way
3501 :			path names are shown in CM's progress report and also the internal
3502 :			protocol encoding used for parallel make.
3503 :
3504 :			The encoding now uses one or more ':'-separated segments. Each
3505 :			segments corresponds to a file that has been specified relative to the
3506 :			file given by its preceding segment. The first segment is either
3507 :			relative to the CWD, absolute, or anchored. Each segment itself is
3508 :			basically a Unix pathname; all segments but the first are relative.
3509 :
3510 :			Example:
3511 :
3512 :			$foo/bar/baz.cm:a/b/c.sml
3513 :
3514 :			This path denotes the file bar/a/b/c.sml relative to the directory
3515 :			denoted by anchor "foo". Notice that the encoding also includes
3516 :			baz.cm which is the .cm-file that listed a/b/c.sml. As usual, such
3517 :			paths are resolved relative to the .cm-files directory, so baz.cm must
3518 :			be ignored to get the "real" pathname.
3519 :
3520 :			To make this fact more obvious, CM puts the names of such "virtual
3521 :			arcs" into parentheses when they appear in progress reports. (No
3522 :			parentheses will appear in the internal protocol encoding.) Thus,
3523 :			what you really see is:
3524 :
3525 :			$foo/bar/(baz.cm):a/b/c.sml
3526 :
3527 :			I find this notation to be much more informative than before.
3528 :
3529 :			Another new feature of the encoding is that special characters
3530 :			including parentheses, colons, (back)slashes, and white space are
3531 :			written as \ddd (where ddd is the decimal encoding of the character).
3532 :
3533 :	blume	670	*** The CM manual still needs to be updated.
3534 :
3535 :	blume	666	----------------------------------------------------------------------
3536 :	leunga	660	Name: Allen Leung
3537 :			Date: 2000/06/15 00:38:00
3538 :			Tag: leunga-20000615-x86-peephole
3539 :
3540 :			x86 Peephole fix by Fermin. Affects c-- and moby only.
3541 :
3542 :			----------------------------------------------------------------------
3543 :	blume	658	Name: Matthias Blume
3544 :			Date: 2000/06/12 11:40:00
3545 :			Tag: blume-20000612-parmakefix
3546 :			Description:
3547 :
3548 :			More cleanup after changing the file naming scheme: This time I
3549 :			repaired the parallel make mechanism for CMB.make which I broke earlier.
3550 :
3551 :			----------------------------------------------------------------------
3552 :	leunga	657	Name: Allen Leung
3553 :			Date: 2000/06/09 01:25:00
3554 :			Tag: leunga-20000609-various
3555 :
3556 :			None of these things should affect normal SML/NJ operations
3557 :
3558 :			1. Peephole improvements provided by Fermin (c--)
3559 :			2. New annotation DEFUSE for adding extra dependence (moby)
3560 :			3. New X86 LOCK instructions (moby)
3561 :			4. New machine description language for reservation tables (scheduling)
3562 :			5. Fixes to various optimization/analysis modules (branch chaining, dominator
3563 :			trees etc.)
3564 :			6. I've changed the CM files so that they can work with versions
3565 :			110.0.6, 110.25 and 110.28
3566 :
3567 :			----------------------------------------------------------------------
3568 :	blume	652	Name: Matthias Blume
3569 :	blume	656	Date: 2000/06/09 12:40:00
3570 :			Tag: blume-20000609-log
3571 :			Description:
3572 :
3573 :			- Removed all(?) remaining RCS Log entries from sources.
3574 :
3575 :			- Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
3576 :			anchored paths).
3577 :
3578 :			----------------------------------------------------------------------
3579 :			Name: Matthias Blume
3580 :	blume	653	Date: 2000/06/07 17:00:00 JST
3581 :			Tag: blume-20000607-no-implicit-anchors
3582 :			Description:
3583 :
3584 :			1. This update changes the default setting for
3585 :			CM.Control.implicit_anchors from true to false. This means that
3586 :			implicit anchors are no longer permitted by default. I also tried to
3587 :			make sure that nothing else still relies on implicit anchors.
3588 :			(This is the next step on the schedule towards a CM that does not even
3589 :			have the notion of implicit anchors anymore.)
3590 :
3591 :			2. More CM manual updates.
3592 :
3593 :			3. I managed to track down and fix the pickling bug I mentioned last
3594 :			time. Because of the previously existing workaround, this entails no
3595 :			immediate practical changes.
3596 :
3597 :			----------------------------------------------------------------------
3598 :			Name: Matthias Blume
3599 :	blume	652	Date: 2000/06/06 11:15:00 JST
3600 :			Tag: blume-20000606-lazierpickle
3601 :			Description:
3602 :
3603 :			!!!! NEW BOOT FILES !!!!
3604 :
3605 :			* The main purpose of this update is to make library pickles lazier in
3606 :			order to reduce the initial space penalty for autoloading a library.
3607 :			As a result, it is now possible to have $smlnj/compiler.cm
3608 :			pre-registered. This should take care of the many complaints or
3609 :			inquiries about missing structure Compiler. This required changes to
3610 :			CM's internal data structures and small tweaks to some algorithms.
3611 :
3612 :			As a neat additional effect, it is no longer necessary (for the sake
3613 :			of lean heap image files) to distinguish between a "minimal" CM and a
3614 :			"full" CM. Now, there is only one CM (i.e., the "full" version:
3615 :			$smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
3616 :			interactive top level. ($smlnj/cm/minimal.cm is gone.)
3617 :
3618 :			To make the life of compiler-hackers easier, "makeml" now also
3619 :			pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm). In other
3620 :			words, after you bootstrap a new sml for the first time, you will not
3621 :			have to autoload $smlnj/cmb.cm again afterwards. (The first time
3622 :			around you will still have to do it, though.)
3623 :
3624 :			* A second change consists of major updates to the CM manual. There
3625 :			are now several appendices with summary information and also a full
3626 :			specification of the CM description file syntax.
3627 :
3628 :			* In directory src/system I added the script "allcross". This script
3629 :			invokes sml and cross-compiles the compiler for all supported
3630 :			architectures. (Useful when providing a new set of boot files.)
3631 :
3632 :			* There seems to be a latent bug in my "lazy pickles" mechanism. I
3633 :			added a small tweak to pickle-util.sml to work around this problem,
3634 :			but it is not a proper fix yet. I will investigate further. (The
3635 :			effect of the bug was an inflation of library pickle size.)
3636 :
3637 :			* Version number increased to 110.28.1 (to avoid compatibility problems).
3638 :
3639 :			----------------------------------------------------------------------
3640 :	leunga	646	Name: Allen Leung
3641 :	leunga	648	Date: 2000/05/25 17:28 EDT
3642 :			Tag: leunga-20000525-ra
3643 :			Description:
3644 :
3645 :			Fixed a bug in freezing phase of the register allocator.
3646 :
3647 :			----------------------------------------------------------------------
3648 :			Name: Allen Leung
3649 :	leunga	647	Date: 2000/05/15 22:53 EDT
3650 :	leunga	646	Tag: leunga-20000515-alpha-x86-ra
3651 :			Description:
3652 :
3653 :			1. Alpha
3654 :
3655 :			Slight cleanup. Removed the instruction SGNXL
3656 :
3657 :			2. X86
3658 :
3659 :			Added the following instructions to the instruction set:
3660 :
3661 :			ROLx, RORx,
3662 :			BTx, BTSx, BTLx, BTRx,
3663 :			XCHGx, and variants with the LOCK prefix
3664 :
3665 :			3. Register Allocation
3666 :
3667 :			The module ra-rewrite-with-renaming has been improved.
3668 :
3669 :	leunga	647	These have no effect on SML/NJ.
3670 :
3671 :	leunga	646	----------------------------------------------------------------------
3672 :	blume	642	Name: Matthias Blume
3673 :	blume	645	Date: 2000/05/15 16:20:00 JST
3674 :			Tag: blume-20000515-lightrebuild
3675 :			Description:
3676 :
3677 :			1. I added an alternative to "-rebuild" to "makeml". The difference is
3678 :			that prior to calling CMB.make' the CM-variable "LIGHT" will be
3679 :			defined. In effect, the command will not build any cross-compiler
3680 :			backends and therefore finish more quickly.
3681 :
3682 :			The "fixpt" script also takes a "-light" switch to be able to use
3683 :			this new facility while compiling for a fixpoint.
3684 :
3685 :			2. I replaced all mentions of anchored paths in group owner specifications
3686 :			with simple relative paths (usually starting with "..").
3687 :			The rationale is that a library's internal workings should not be
3688 :			compromised by the lack of some anchor. (An anchor is necessary
3689 :			for someone who wants to refer to the library by an anchored path,
3690 :			but it should not be necessary to build the same library in the first
3691 :			place.)
3692 :
3693 :			3. I changed the way CM's tool mechanism determines the shell command
3694 :			string used for things like ml-yacc etc. so that it does not break
3695 :			when CM.Control.implicit_anchors is turned off.
3696 :
3697 :			----------------------------------------------------------------------
3698 :			Name: Matthias Blume
3699 :	blume	644	Date: 2000/05/12 18:20:00 JST
3700 :			Tag: blume-20000512-ml-build
3701 :			Description:
3702 :
3703 :			Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
3704 :			getting installed properly (by config/install.sh).
3705 :
3706 :			----------------------------------------------------------------------
3707 :			Name: Matthias Blume
3708 :	blume	643	Date: 2000/05/12 17:30:00 JST
3709 :			Tag: blume-20000512-anchors
3710 :			Description:
3711 :
3712 :			!!! NEW BOOT FILES !!!
3713 :
3714 :			This change is in preparation of fading out support for "implicitly
3715 :			anchored path names". I went through all sources and used the
3716 :			explicit (and relatively new) $-notation. See system/README and the
3717 :			CM manual for more info on this.
3718 :
3719 :			I also modified the anchoring scheme for some things such as "smlnj",
3720 :			"MLRISC", "cm", etc. to take advantage of the fact that explicit
3721 :			anchors are more expressive: anchor name and first arc do not have to
3722 :			coincide. This entails the following user-visible change:
3723 :
3724 :			You have to write $smlnj/foo/bar instead of smlnj/foo/bar. In
3725 :			particular, when you fire up sml with a command-line argument, say,
3726 :			e.g.:
3727 :
3728 :			sml '$smlnj/cmb.cm'
3729 :
3730 :			At the ML toplevel prompt:
3731 :
3732 :			CM.autoload "$smlnj/cmb.cm";
3733 :
3734 :			There is also a new controller in CM.Control that can be used to turn
3735 :			off all remaining support for implicit anchors by saying:
3736 :
3737 :			CM.autoload "$smlnj/
3738 :			#set CM.Control.implicit_anchors false;
3739 :
3740 :			This causes CM to reject implicitly anchored paths. This is (for the
3741 :			time being) less permissive than the "final" version where there will
3742 :			be no more such implicit anchors and relative paths will be just that:
3743 :			relative.
3744 :
3745 :			The next step (version after next version?) will be to make the
3746 :			default for CM.Control.implicit_anchors false. After the dust has
3747 :			settled, I can then produce the "final" version of this...
3748 :
3749 :			Note: Since bootstrapping is a bit tricky, I provided new boot files.
3750 :
3751 :			----------------------------------------------------------------------
3752 :			Name: Matthias Blume
3753 :	blume	642	Date: 2000/05/11 16:30:00 JST
3754 :			Tag: blume-20000511-sources
3755 :			Description:
3756 :
3757 :			The main change is that I added function CM.sources as a generalized
3758 :			version of the earlier CM.makedepend. This entails the following
3759 :			additional changes:
3760 :
3761 :			- CM.makedepend has been dropped.
3762 :
3763 :			- CM manual has been updated.
3764 :
3765 :			- TOOLS signature and API have been changed.
3766 :
3767 :			----------------------------------------------------------------------
3768 :	leunga	640	Name: Allen Leung
3769 :	leunga	641	Date: 2000/05/10 21:17 EDT
3770 :			Tag: leunga-20000510-moby-c--ssa
3771 :			Description:
3772 :
3773 :			Various bug fixes and new features for C--, Moby and MLRISC optimizations.
3774 :			None of these affect SML/NJ.
3775 :
3776 :			1. Register Allocation
3777 :
3778 :			a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
3779 :			This module tries to remove local (i.e. basic block level) redundancies
3780 :			during spilling.
3781 :
3782 :			b. A new framework for performing region based register allocation.
3783 :			Not yet entirely functional.
3784 :
3785 :			2. X86
3786 :
3787 :			a. DefUse for POP was missing the stack pointer [found by Lal]
3788 :			b. Reload for CALL was incorrect in X86Spill [found by John]
3789 :			c. Various fixes in X86Spill so that it can be used correctly for
3790 :			the new spilling module.
3791 :
3792 :			3. SSA/IR
3793 :
3794 :			a. New module ir/dj-dataflow.sml implements elimination based
3795 :			data flow analysis.
3796 :
3797 :			4. MLRiscGen
3798 :
3799 :			a. Fix for gc type annotation
3800 :
3801 :			5. MDGen
3802 :
3803 :			Various fixes for machine description -> ml code translation. For ssa
3804 :			only.
3805 :
3806 :			----------------------------------------------------------------------
3807 :			Name: Allen Leung
3808 :	leunga	640	Date: 2000/05/08 22:17 EDT
3809 :			Tag: leunga-20000508-labexp
3810 :			Description:
3811 :
3812 :			Fermin has found a few assembly problems with constant expressions
3813 :			generated in LabelExp. Mostly, the problems involve extra parentheses,
3814 :			which choke on dumb assemblers. This is his fix.
3815 :
3816 :			----------------------------------------------------------------------
3817 :	dbm	635	Name: Dave MacQueen
3818 :			Date: 2000/04/09 14:00 EDT
3819 :			Tag: dbm-20000502-Version_110_28
3820 :			Description:
3821 :
3822 :			1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
3823 :
3824 :			2. Updated config/version to 110.28
3825 :
3826 :			3. Updated config/srcarchiveurl
3827 :
3828 :			3. New boot files!
3829 :			ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
3830 :
3831 :			----------------------------------------------------------------------
3832 :	blume	634	Name: Matthias Blume
3833 :			Date: 2000/05/01 19:05:00 JST
3834 :			Tag: blume-20000501-noweb
3835 :			Description:
3836 :
3837 :			A new noweb tool has been added. The existing system is entirely
3838 :			unaffected by this, but some CM users have asked for renewed noweb
3839 :			support. Everything is documented in the CM manual.
3840 :
3841 :			New (plugin) libraries:
3842 :
3843 :			noweb-tool.cm
3844 :			nw-ext.cm
3845 :
3846 :			----------------------------------------------------------------------
3847 :	dbm	633	Name: Dave MacQueen
3848 :			Date: 2000/04/30 12:40PM EDT
3849 :			Tag: dbm-20000430-bug_fixes
3850 :			Description:
3851 :
3852 :			1. Fix for bug 1498
3853 :			smlnj/src/system/Basis/Implementation/Unsafe/object.sig
3854 :			smlnj/src/system/Basis/Implementation/Unsafe/object.sml
3855 :			added toRealArray function
3856 :			smlnj/src/compiler/MiscUtil/print/ppobj.sml
3857 :			added check for tag Obj.RealArray to array printing case in ppObj
3858 :
3859 :			2. Fix for bug 1510
3860 :			smlnj/src/compiler/Semant/types/typesutil.sml
3861 :			fixed definition of dummyargs (used by equalTycon) so that
3862 :			dummy args are distinct types
3863 :
3864 :			----------------------------------------------------------------------
3865 :	blume	629	Name: Matthias Blume
3866 :	blume	632	Date: 2000/04/30 01:00:00 JST
3867 :			Tag: blume-20000430-versions
3868 :			Description:
3869 :
3870 :			1. CM version numbering added. This is an implementation of Lal's
3871 :			proposal for adding version numbers and version checking to .cm
3872 :			files. Lal said that his proposal was just that -- a proposal.
3873 :			For the time being I went ahead and implemented it so that people
3874 :			can comment on it. Everything is completely backward-compatible
3875 :			(except for the stable library format, i.e., new bootfiles!).
3876 :
3877 :			As usual, see the CM manual for details.
3878 :
3879 :			2. An alternative syntax for anchored paths has been implemented.
3880 :			Dave has recently voiced the same concerns that I had when I did
3881 :			this, so there should be some support. My take is that eventually
3882 :			I will let support for the current syntax (where anchors are
3883 :			"implicit") fade out in favor of the new, explicit syntax.
3884 :			In order to be backward-compatible, both old and new syntax are
3885 :			currently supported.
3886 :
3887 :			Again, see the CM manual for details.
3888 :
3889 :			3. Parallel make is trying to be slightly smarter: When the master
3890 :			process finds a "bottleneck", i.e., when there is only one
3891 :			compilation unit that can be compiled and everybody else is
3892 :			waiting on it, then it will simply compile it directly instead
3893 :			of clumsily telling one of the slaves to do it.
3894 :
3895 :			4. Support for "unsharing" added. This is necessary in order to be
3896 :			able to have two different versions of the same library running
3897 :			at the same time (e.g., for trying out a new MLRISC while still
3898 :			having the old MLRISC linked into the current compiler, etc.)
3899 :			See the CM manual.
3900 :
3901 :			5. Simple "makedepend" functionality added for generating Makefile
3902 :			dependency information. (This is rather crude at the moment.
3903 :			Expect some changes here in the future.)
3904 :
3905 :			6. ".fun" added as a recognized suffix for ML files. Also documented
3906 :			explicitly in the manual that the fallback behavior (unknown suffix
3907 :			-> ML file) is not an official feature!
3908 :
3909 :			7. Small changes to the pickler for stable libraries.
3910 :
3911 :			8. Several internal changes to CM (for cleanup/improvement).
3912 :
3913 :
3914 :			!!!! NEW BINFILES !!!!
3915 :
3916 :			----------------------------------------------------------------------
3917 :			Name: Matthias Blume
3918 :	blume	631	Date: 2000/04/28 17:30:00 JST
3919 :			Tag: blume-20000428-pathconfig
3920 :			Description:
3921 :
3922 :			1. I changed config/install.sh to remove duplicate entries from the
3923 :			lib/pathconfig file at the end. Moreover, the final version of
3924 :			lib/pathconfig is sorted alphabetically. The same (sorting) is done
3925 :			in src/system/installml.
3926 :
3927 :			2. The config/install.sh script now consistently uses relative
3928 :			pathnames in lib/pathconfig whenever the anchor is in the lib
3929 :			directory. (So far this was true for the libraries that come
3930 :			pre-compiled and bundled as part of the bootfiles but not for
3931 :			libraries that are compiled by the script itself.)
3932 :
3933 :			----------------------------------------------------------------------
3934 :			Name: Matthias Blume
3935 :	blume	629	Date: 2000/04/26 13:10:00 JST
3936 :			Tag: blume-20000426-fun_suffix
3937 :			Description:
3938 :
3939 :			Added ".fun" as a recognized file name suffix (for ML code).
3940 :
3941 :			----------------------------------------------------------------------
3942 :	leunga	628	Name: Allen Leung
3943 :			Date: 2000/04/25 17:00:00 EST
3944 :			Tag: leunga-20000425-alpha-ra
3945 :			Description:
3946 :
3947 :			1. Alpha
3948 :
3949 :			PSEUDOARITH was missing in AlphaRewrite. This causes an endless loop
3950 :			in C--.
3951 :
3952 :			2. RA
3953 :
3954 :			Added a flag "ra-dump-size" to print out the size of the flowgraph
3955 :			and the interference graph.
3956 :
3957 :			----------------------------------------------------------------------
3958 :	dbm	627	Name: Dave MacQueen
3959 :			Date: 2000/04/25/
3960 :			Tag: dbm-20000425-mlyacc_doc_examples
3961 :			Description:
3962 :			Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
3963 :			Updated all three examples in src/ml-yacc/examples to run
3964 :			under 110.* using CM.make.
3965 :
3966 :			----------------------------------------------------------------------
3967 :	leunga	624	Name: Allen Leung
3968 :			Date: 2000/04/20 23:04:00 EST
3969 :			Tag: leunga-20000420-ssa-c---stuff
3970 :			Description:
3971 :
3972 :			This update synchronizes my repository with Yale's. Most of these
3973 :			changes, however, do not affect SML/NJ at all (the RA is an exception).
3974 :
3975 :			1. Register Allocator
3976 :
3977 :			a. An improvement in the interference graph construction:
3978 :			Given a copy
3979 :
3980 :			s <- t
3981 :
3982 :	leunga	628	no interference edge between s and t is added for this definition of s.
3983 :	leunga	624
3984 :			b. I've added two new spill heuristic modules that Fermin and I developed
3985 :			(in the new library RA.cm). These are unused in SML/NJ but maybe
3986 :			useful for others (Moby?)
3987 :
3988 :			2. X86
3989 :
3990 :			a. Various fixes in the backend provided by Fermin [C--] and Lal.
3991 :
3992 :			3. Alpha
3993 :
3994 :			a. Added the BSR instruction and code generation that goes with it [C--]
3995 :			b. Other fixes too numerous to recount provided by Fermin [C--]
3996 :
3997 :			4. Regmaps
3998 :
3999 :			a. The regmaps are not initialized with the identity physical bindings
4000 :			at creation time. This is unneeded.
4001 :
4002 :			5. MLRISC Optimizations
4003 :
4004 :			a. The DJ-Graph module can now compute the iterated dominance frontiers
4005 :			intersects with liveness incrementally in linear time! Woohoo!
4006 :			This is now used in my new SSA construction algorithm.
4007 :
4008 :			b. THe branch reorganization module is now smarter about linear chains of
4009 :			basic blocks.
4010 :
4011 :
4012 :			----------------------------------------------------------------------
4013 :	blume	615	Name: Matthias Blume
4014 :			Date: 2000/04/12 13:52:00 JST
4015 :			Tag: blume_main_v110p27_1
4016 :			Description:
4017 :
4018 :			Changed install.sh script to handle archive files without version number
4019 :			and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
4020 :			name of the boot file archive.
4021 :
4022 :			----------------------------------------------------------------------
4023 :	dbm	607	Name: Dave MacQueen
4024 :			Date: 2000/04/09 14:00 EDT
4025 :			Tag: dbm-20000410-Version_110_27
4026 :			Description:
4027 :
4028 :			1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
4029 :
4030 :			2. Updated src/config/version to 110.27
4031 :
4032 :			3. New boot files!
4033 :
4034 :			----------------------------------------------------------------------
4035 :	leunga	606	Name: Allen Leung
4036 :			Date: 2000/04/09 19:09:00 EST
4037 :			Tag: leunga-20000409-misc
4038 :			Description:
4039 :
4040 :			1. Yet another fix for x86 assembly for idivl, imull, mull and friends.
4041 :
4042 :			2. Miscellaneous improvements to MLRISC (unused in sml/nj)
4043 :
4044 :			----------------------------------------------------------------------
4045 :	monnier	605	Name: Stefan
4046 :			Date: 2000/04/07 10:00:00 EDT
4047 :			Tag: monnier-20000406-branch-handling
4048 :			Description:
4049 :
4050 :			Improved handling of branches (mostly those generated from
4051 :			polymorphic equality), removed switchoff and changed the
4052 :			default optimization settings (more cpsopt and less flintopt).
4053 :
4054 :			----------------------------------------------------------------------
4055 :	leunga	601	Name: Allen Leung
4056 :	leunga	602	Date: 2000/04/06 01:30:00 EST
4057 :			Tag: leunga-20000406-peephole-x86-SSA-2
4058 :			Description:
4059 :
4060 :			Forgot a few files.
4061 :
4062 :			----------------------------------------------------------------------
4063 :			Name: Allen Leung
4064 :	leunga	601	Date: 2000/04/06 00:36:00 EST
4065 :			Tag: leunga-20000406-peephole-x86-SSA
4066 :			Description:
4067 :
4068 :			1. New Peephole code
4069 :
4070 :			2. Minor improvement to X86 instruction selection
4071 :
4072 :			3. Various fixes to SSA and machine description -> code translator
4073 :
4074 :			----------------------------------------------------------------------
4075 :	blume	595	Name: Matthias Blume
4076 :			Date: 2000/04/05 12:30:00 JST
4077 :			Tag: blume_main_v110p26p2_3
4078 :			Description:
4079 :
4080 :			This update just merges three minor cosmetic updates to CM's sources
4081 :			to get ready for the 110.27 code freeze on Friday. No functionality
4082 :			has changed.
4083 :
4084 :			----------------------------------------------------------------------
4085 :	leunga	593	Name: Allen Leung
4086 :	leunga	594	Date: 2000/04/04 19:39:00 EST
4087 :			Tag: leunga-20000404-x86-asm
4088 :			Description:
4089 :
4090 :			1. Fixed a problem in X86 assembly.
4091 :
4092 :			Things like
4093 :
4094 :			jmp %eax
4095 :			jmp (%eax)
4096 :
4097 :			should be output as
4098 :
4099 :			jmp *%eax
4100 :			jmp *(%eax)
4101 :
4102 :			2. Assembly output
4103 :
4104 :			Added a new flag
4105 :
4106 :			"asm-indent-copies" (default to false)
4107 :
4108 :			When this flag is on, parallel copies will be indented an extra level.
4109 :
4110 :			----------------------------------------------------------------------
4111 :			Name: Allen Leung
4112 :	leunga	593	Date: 2000/04/04 03:18:00 EST
4113 :			Tag: leunga-20000404-C--Moby
4114 :			Description:
4115 :
4116 :			All of these fixes are related to C--, Moby, and my own optimization
4117 :			stuff; so they shouldn't affect SML/NJ.
4118 :
4119 :			1. X86
4120 :
4121 :			Various fixes related floating point, and extensions.
4122 :
4123 :			2. Alpha
4124 :
4125 :			Some extra patterns related to loads with signed/zero extension
4126 :			provided by Fermin.
4127 :
4128 :			3. Assembly
4129 :
4130 :	monnier	659	When generating assembly, resolve the value of client defined constants,
4131 :	leunga	593	instead of generating symbolic values. This is controlled by the
4132 :			new flag "asm-resolve-constants", which is default to true.
4133 :
4134 :			4. Machine Descriptions
4135 :
4136 :			a. The precedence parser was slightly broken when parsing infixr symbols.
4137 :			b. The type generalizing code had the bound variables reversed, resulting
4138 :			in a problem during arity raising.
4139 :			c. Various fixes in machine descriptions.
4140 :
4141 :			----------------------------------------------------------------------
4142 :	blume	592	Name: Matthias Blume
4143 :			Date: 2000/04/03 16:05:00 JST
4144 :			Tag: blume_main_v110p26p2_2
4145 :			Description:
4146 :
4147 :			I eliminated coreEnv from compInfo. Access to the "Core" structure is
4148 :			now done via the ordinary static environment that is context to each
4149 :			compilation unit.
4150 :
4151 :			To this end, I arranged that instead of "structure Core" as "structure
4152 :			_Core" is bound in the pervasive environment. Core access is done via
4153 :	monnier	659	_Core (which can never be accidentally rebound because _Core is not a
4154 :	blume	592	legal surface-syntax symbol).
4155 :
4156 :			The current solution is much cleaner because the core environment is
4157 :			now simply part of the pervasive environment which is part of every
4158 :			compilation unit's context anyway. In particular, this eliminates all
4159 :			special-case handling that was necessary until now in order to deal
4160 :			with dynamic and symbolic parts of the core environment.
4161 :
4162 :			Remaining hackery (to bind the "magic" symbol _Core) is localized in the
4163 :	monnier	659	compilation manager's bootstrap compiler (actually: in the "init group"
4164 :	blume	592	handling). See the comments in src/system/smlnj/init/init.cmi for
4165 :			more details.
4166 :
4167 :			I also tried to track down all mentions of "Core" (as string argument
4168 :			to Symbol.strSymbol) in the compiler and replaced them with a
4169 :			reference to the new CoreSym.coreSym. Seems cleaner since the actual
4170 :			name appears in one place only.
4171 :
4172 :			Binfile and bootfile format have not changed, but the switchover from
4173 :			the old "init.cmi" to the new one is a bit tricky, so I supplied new
4174 :			bootfiles anyway.
4175 :
4176 :			----------------------------------------------------------------------
4177 :	leunga	591	Name: Allen Leung
4178 :			Date: 2000/04/02 21:17:00 EST
4179 :			Tag: leunga-20000402-mltree
4180 :			Description:
4181 :	leunga	585
4182 :	leunga	591	1. Renamed the constructor CALL in MLTREE by popular demand.
4183 :			2. Added a bunch of files from my repository. These are currently
4184 :			used by other non-SMLNJ backends.
4185 :
4186 :	leunga	576	----------------------------------------------------------------------
4187 :	leunga	590	Name: Allen Leung
4188 :			Date: 2000/03/31 21:15:00 EST
4189 :			Tag: leunga-20000331-aliasing
4190 :			Description:
4191 :
4192 :			This update contains a rewritten (and hopefully more correct) module
4193 :			for extracting aliasing information from CPS.
4194 :
4195 :			To turn on this feature:
4196 :
4197 :			Compiler.Control.CG.memDisambiguate := true
4198 :
4199 :			To pretty print the region information with assembly
4200 :
4201 :			Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
4202 :
4203 :			To control how many levels of aliasing information are printed, use:
4204 :
4205 :			Compiler.Control.MLRISC.getInt "points-to-show-level" := n
4206 :
4207 :			The default of n is 3.
4208 :
4209 :			----------------------------------------------------------------------
4210 :	dbm	589	Name: David MacQueen
4211 :			Date: 2000/03/31 11:15:00 EST
4212 :			Tag: dbm-20000331-runtime_fix
4213 :			Description:
4214 :
4215 :			This update contains:
4216 :
4217 :			1. runtime/c-lib/c-libraries.c
4218 :			includes added in revision 1.2 caused compilation errors on hppa-hpux
4219 :
4220 :			2. fix for bug 1556
4221 :			system/Basis/Implementation/NJ/internal-signals.sml
4222 :
4223 :			----------------------------------------------------------------------
4224 :	blume	587	Name: Matthias Blume
4225 :	blume	588	Date: 2000/03/31 18:00:00 JST
4226 :			Tag: blume_main_v110p26p2_1
4227 :			Description:
4228 :
4229 :			This update contains:
4230 :
4231 :			1. A small change to CM's handling of stable libraries:
4232 :			CM now maintains one "global" modmap that is used for all stable
4233 :			libraries. The use of such a global modmap maximizes sharing and
4234 :			minimizes the need for re-traversing parts of environments during
4235 :			modmap construction. (However, this has minor impact since modmap
4236 :			construction seems to account for just one percent or less of total
4237 :			compile time.)
4238 :
4239 :			2. I added a "genmap" phase to the statistics. This is where I got the
4240 :			"one percent" number (see above).
4241 :
4242 :			3. CM's new tool parameter mechanism just became _even_ better. :)
4243 :			- The parser understands named parameters and recursive options.
4244 :			- The "make" and "shell" tools use these new features.
4245 :			(This makes it a lot easier to cascade these tools.)
4246 :			- There is a small syntax change: named parameters use a
4247 :
4248 :			<name> : ( <option> ... ) or
4249 :			<name> : <string>
4250 :
4251 :			syntax. Previously, named parameters were implemented in an
4252 :			ad-hoc fashion by each tool individually (by parsing strings)
4253 :			and had the form
4254 :
4255 :			<name>=<string>
4256 :
4257 :			See the CM manual for a full description of these issues.
4258 :
4259 :			----------------------------------------------------------------------
4260 :			Name: Matthias Blume
4261 :	blume	587	Date: 2000/03/30 18:00:00 JST
4262 :			Tag: blume_main_v110p26p2_0
4263 :			Description:
4264 :
4265 :			!!!!! WARNING !!!!!!
4266 :			!! New binfiles !!
4267 :			!!!!!!!!!!!!!!!!!!!!
4268 :
4269 :			This update contains:
4270 :
4271 :			1. Moderate changes to CM:
4272 :
4273 :			- Changes to CM's tools mechanism. In particular, it is now possible
4274 :			to have tools that accept additional "command line" parameters
4275 :			(specified in the .cm file at each instance where the tool's class is
4276 :			used).
4277 :
4278 :	monnier	659	This was done to accommodate the new "make" and "shell" tools which
4279 :			facilitate fairly seamless hookup to portions of code managed using
4280 :	blume	587	Makefiles or Shell scripts.
4281 :
4282 :			There are no classes "shared" or "private" anymore. Instead, the
4283 :			sharing annotation is now a parameter to the "sml" class.
4284 :
4285 :			There is a bit of generic machinery for implementing one's own
4286 :			tools that accept command-line parameters. However, I am not yet fully
4287 :			satisfied with that part, so expect changes here in the future.
4288 :
4289 :			All existing tools are described in the CM manual.
4290 :
4291 :	monnier	659	- Slightly better error handling. (CM now suppresses many followup
4292 :	blume	587	error messages that tended to be more annoying than helpful.)
4293 :
4294 :			2. Major changes to the compiler's static environment data structures.
4295 :
4296 :			- no CMStaticEnv anymore.
4297 :			- no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
4298 :			but it is called Environment), no conversions between different
4299 :			kinds of static environments
4300 :
4301 :			- There is still a notion of a "modmap", but such modmaps are generated
4302 :			on demand at the time when they are needed. This sounds slow, but I
4303 :			sped up the code that generates modmaps enough for this not to lead to
4304 :			a slowdown of the compiler (at least I didn't detect any).
4305 :
4306 :			- To facilitate rapid modmap generation, static environments now
4307 :			contain an (optional) "modtree" structure. Modtree annotations are
4308 :			constructed by the unpickler during unpickling. (This means that
4309 :			the elaborator does not have to worry about modtrees at all.)
4310 :			Modtrees have the advantage that they are compositional in the same
4311 :			way as the environment data structure itself is compositional.
4312 :			As a result, modtrees never hang on to parts of an environment that
4313 :			has already been rendered "stale" by filtering or rebinding.
4314 :
4315 :			- I went through many, many trials and errors before arriving at the
4316 :			current solution. (The initial idea of "linkpaths" did not work.)
4317 :			But the result of all this is that I have touched a lot of files that
4318 :			depend on the "modules" and "types" data structures (most of the
4319 :			elaborator). There were a lot of changes during my "linkpath" trials
4320 :			that could have been reverted to their original state but weren't.
4321 :			Please, don't be too harsh on me for messing with this code a bit more
4322 :	monnier	921	than what